Please choose the correct ending to complete the given sentence: Assembling bicycle: A man is standing inside a building. He is talking while holding a bike. he

Ending1: holds up the bike while he talks about it. Ending2: picks it up and drives it outside. Ending3: lays the bike on a bed, and strips gravel in his hand. Ending4: sits down and adds chains to a bicycle.

Answer format: ending1/ending2/ending3/ending4