Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to tie down a motorcycle [title] Place a motorcycle wheel chock towards the front of your truck bed or trailer. [step] A motorcycle wheel chock is a wedge of metal or another sturdy material placed in front of the motorcycle's front wheel to prevent any movement. [title] Load your motorcycle into the truck bed or trailer.

Ending1: [step] The chock should sit under the motorcycle while supporting the weight of the bike. [title] Position the choke and clutch in this position, as mentioned below. Ending2: [step] Make sure the backside of the motorcycle is facing down so you can hold both legs during transport. [title] Pull the front wheel of the motorcycle over the rear bumper rail to the left. Ending3: [step] Push the motorcycle up a ramp, or have some helpers pick up the motorcycle to get it into the truck bed or trailer. [title] Push the front wheel into the motorcycle wheel chock. Ending4: [step] Attach your motorcycle wheel chock between the front side door cover and the trailer door behind the motorcycle. Once you secure your motorcycle in place, close the front door latch on the back of the motorcycle and tie your motorcycle's wheels to the front door head.

Answer format: ending1/ending2/ending3/ending4