Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to ship a bicycle cheaply [title] Use an allen key to unscrew the handlebars from the bike. [step] Put the allen key into the screw on the front of your handlebars. Turn the wrench counterclockwise to loosen the screw.

Ending1: [substeps] Make sure you do not unscrew the bike just before you plan to stop. If you drive an older bicycle, make sure you stop just after changing gears, thinking that the gears you're trying to change could damage the bike. Ending2: [substeps] A allen key is typically found in the rear of the bike. You should have a second allen key near the wheel, as these are often the same size. Ending3: Once it's loose, you should be able to lift your handlebars from their housing. [substeps] Place the screws and bolts in a zip lock bag to keep the smaller parts together for when you want to reassemble the bike later. Ending4: Now you can hook the bicycle's mounting bracket onto the bike so that the handlebars hang down. [title] Poke a push pin through the screw, where it used to be.

Answer format: ending1/ending2/ending3/ending4