End Wrench

Which tools are required when adjusting a roll-up door counter-balance spring?

please help! possible answers are
C-clamp and band clamp
Two round rods, lock-type clamp, and open-end wrench
Pliers, pipe wrench and large screwdriver
Large screwdriver and pry bar
this is the question from an exam that I need to write... not for my garage door...
I am stuck between b and c, anyone, any idea?

A phone. Call a garage door place. Your messing with danger.

Discover End Wrench On eBay Below:

Generic Open End Wrench 339 568 A Used 67892
Generic Open End Wrench 339 568 A Used 67892
$50.00
FAIRMOUNT MARTIN 2 3 4 Large Wrench Superwrench Single Head Open End
FAIRMOUNT MARTIN 2 3 4 Large Wrench Superwrench Single Head Open End
$100.00
Williams 1 7 8 Black Oxide Open End Single Head Wrench 16 BW 11A
Williams 1 7 8 Black Oxide Open End Single Head Wrench 16 BW 11A
$36.81
Engineers Open End Wrench 7 8 1 Chrome Alloy
Engineers Open End Wrench 7 8 1 Chrome Alloy
$6.99
NOS 2 7 16 Twist Lock Open End Wrench 8D00136 1 244 5120013931086
NOS 2 7 16 Twist Lock Open End Wrench 8D00136 1 244 5120013931086
$600.00
Berylco W 98 Double Open End Wrench 1 4 x 9 32
Berylco W 98 Double Open End Wrench 1 4 x 9 32
$19.99
17 1 2L Double End Valve Wheel Wrench Westward 5PWE7
17 1 2L Double End Valve Wheel Wrench Westward 5PWE7
$54.99
NOS Williams Open End Wrench 2 9 16 BW 15 Steel 30026 A A 1354 5120014666246
NOS Williams Open End Wrench 2 9 16 BW 15 Steel 30026 A A 1354 5120014666246
$200.00
ZMC RS 803 Intermediate Retractable Idler Ends w Plastic Wrench 10mm NOS
ZMC RS 803 Intermediate Retractable Idler Ends w Plastic Wrench 10mm NOS
$22.48
NOS Open End Single Head Wrench 2 9 16 Martin 15 BW14A GGG W 636
NOS Open End Single Head Wrench 2 9 16 Martin 15 BW14A GGG W 636
$175.00
NOS Open End Engineers Single Head Wrench 2 9 16 Martin 15
NOS Open End Engineers Single Head Wrench 2 9 16 Martin 15
$149.00
Large Orange Open End Pipe Wrench 1 1 4 2
Large Orange Open End Pipe Wrench 1 1 4 2
$15.99
Bondhus 20399 Ball End L Wrench Double Pack with BriteGuard and GoldGuard Finish
Bondhus 20399 Ball End L Wrench Double Pack with BriteGuard and GoldGuard Finish
$36.22
TEKTON 25282 26 pc Long Arm Ball End Hex Key Wrench Set Inch Metric
TEKTON 25282 26 pc Long Arm Ball End Hex Key Wrench Set Inch Metric
$22.62
BF DIN 895 22mm x 20mm Double Open End Wrench 7 1 2 OAL
BF DIN 895 22mm x 20mm Double Open End Wrench 7 1 2 OAL
$10.79
CIP 10432 7 8 x 12 Insulated 12pt Single End Ratchet Wrench Qty 1 USA
CIP 10432 7 8 x 12 Insulated 12pt Single End Ratchet Wrench Qty 1 USA
$37.60
Cornwell 2 USA BW 3032 15 16  1 12pt Box End Wrench
Cornwell 2 USA BW 3032 15 16 1 12pt Box End Wrench
$17.99
1Pcs 13mm Square Drive 84mm 18 Flutes End Cap Style Oil Filter Wrench Tool
1Pcs 13mm Square Drive 84mm 18 Flutes End Cap Style Oil Filter Wrench Tool
$6.82
1Pcs 13mm Square Drive 65mm 14 Flutes End Cap Style Oil Filter Wrench Tool
1Pcs 13mm Square Drive 65mm 14 Flutes End Cap Style Oil Filter Wrench Tool
$9.22
1Pcs 13mm Square Drive 74mm 14 Flutes End Cap Style Oil Filter Wrench Tool
1Pcs 13mm Square Drive 74mm 14 Flutes End Cap Style Oil Filter Wrench Tool
$9.71
VINTAGE PC 2250 USED DOUBLE BOX END WRENCH 1 5 8 AND 1 7 16 2250
VINTAGE PC 2250 USED DOUBLE BOX END WRENCH 1 5 8 AND 1 7 16 2250
$25.00
GENERIC OPEN DOUBLE END SPANNER WRENCH 65MM X 46MM USED
GENERIC OPEN DOUBLE END SPANNER WRENCH 65MM X 46MM USED
$65.00
Vintage WILLIAMS 7 8 OPEN END WRENCH 5 UD27
Vintage WILLIAMS 7 8 OPEN END WRENCH 5 UD27
$9.99
Cementex OEW 20 Insulated Open End Wrench 5 8
Cementex OEW 20 Insulated Open End Wrench 5 8
$39.40
Cementex BEW 12 Insulated Box End Wrench 3 8
Cementex BEW 12 Insulated Box End Wrench 3 8
$36.38
Cementex BEW 26 Insulated Box End Wrench 13 16
Cementex BEW 26 Insulated Box End Wrench 13 16
$55.62
Cementex OEW 26 Insulated Open End Wrench 13 16
Cementex OEW 26 Insulated Open End Wrench 13 16
$55.62
Cementex BEW 20 Insulated Box End Wrench 5 8
Cementex BEW 20 Insulated Box End Wrench 5 8
$39.40
Cementex OEW 18 Insulated Open End Wrench 9 16
Cementex OEW 18 Insulated Open End Wrench 9 16
$39.40
Cementex BEW 18 Insulated Box End Wrench 9 16
Cementex BEW 18 Insulated Box End Wrench 9 16
$39.40
Cementex BEW 14 Insulated Box End Wrench 7 16
Cementex BEW 14 Insulated Box End Wrench 7 16
$36.38
Cementex OEW 12 Insulated Open End Wrench 3 8
Cementex OEW 12 Insulated Open End Wrench 3 8
$36.38
Cementex BEW 24 Insulated Box End Wrench 3 4
Cementex BEW 24 Insulated Box End Wrench 3 4
$39.40
Cementex OEW 22 Insulated Open End Wrench 11 16
Cementex OEW 22 Insulated Open End Wrench 11 16
$39.40
Cementex BEW 16 Insulated Box End Wrench 1 2
Cementex BEW 16 Insulated Box End Wrench 1 2
$39.40
Cementex BEW 22 Insulated Box End Wrench 11 16
Cementex BEW 22 Insulated Box End Wrench 11 16
$39.40
Williams 8912 2 Offset 12pt Box End Structural Wrench
Williams 8912 2 Offset 12pt Box End Structural Wrench
$31.49
Williams Double End 1 5 8 Wrench One End Offset USA 22
Williams Double End 1 5 8 Wrench One End Offset USA 22
$22.49
FAIRMOUNT MARTIN 2 15 16 Large Wrench Superwrench Single Head Open End
FAIRMOUNT MARTIN 2 15 16 Large Wrench Superwrench Single Head Open End
$100.00

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