Please choose the correct ending to complete the given sentence: Assembling bicycle: We see the people putting the bike together. The boy puts the handlebar on. We see a man put on the back tire. we

Ending1: see it covered in mud. Ending2: straight up the men in the grass and down at the boys cockpit. Ending3: see the camera man talking. Ending4: see a man put on the seat.

Answer format: ending1/ending2/ending3/ending4