Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to lock your bike [title] Pop off the front wheel. [step] If your bike has a quick-release front wheel, remove it and place it next to the rear wheel for locking. [substeps] If you can't remove your front wheel, or your u lock is not large enough to encompass both wheels, secure the rear wheel then continue reading for alternatives.

Ending1: [title] Secure the wheels and frame to an immovable object. [step] Using a " d " or " u " lock, secure the back end of your bike to another object. Ending2: [title] Read the order of your u lock. [step] The order of the u lock will depend on which wheel you now have. Ending3: [title] Insert a metal file into the release bolts. [step] While you can use a screw head, make sure it is fitted tightly against the release bolts themselves (or you can use a wide-armed file). Ending4: [title] Try using a reverse " v " lock. [step] This is easier and quicker to do but will not lock more than one wheel.

Answer format: ending1/ending2/ending3/ending4