Please choose the correct ending to complete the given sentence: Assembling bicycle: A man attaches a baby stroller to the back of a bicycle. He puts the wheel on the stroller. he

Ending1: sits on the back the stroller. Ending2: stands up next to the stroller. Ending3: then attaches a pressure washer to the back wheel. Ending4: takes the wheel off the stroller.

Answer format: ending1/ending2/ending3/ending4