Please choose the correct ending to complete the given sentence: Assembling bicycle: A bicycle is shown in a room leaning up against a brown table. a person

Ending1: then walks into the room and starts to take pieces off of the bicycle. Ending2: inserts tires onto the sides of a bicycle. Ending3: has painted the front and back wheel of the bicycle with a pink paint brush. Ending4: pushes a cable along the wheels of the bike.

Answer format: ending1/ending2/ending3/ending4