Please choose the correct ending to complete the given sentence: Assembling bicycle: A series of metal clamps are shown before a bicycle with gold spikes and a black white walled tire is shown without a chain, as a hand begins to apply one to the bicycle. the chain

Ending1: is rolled to the side and then the boots are put on the bike with the bike leverage. Ending2: begins to move with the white netting roaming from hand to hand and web across the top of it. Ending3: is attached with two metal clasps and the final results are shown with the chain completely attached to the bicycle. Ending4: is applied to the tire twice and then the scene cuts away from the chain and mode switches to a wheel one chain at a time.

Answer format: ending1/ending2/ending3/ending4