Please choose the correct ending to complete the given sentence: Mowing the lawn: A man is mowing the lawn on a riding lawn mower. kids

Ending1: are riding bikes on the street in front of him. Ending2: are in class with him, trying to imitate his style. Ending3: are in the garage next door next to the lawn mower. Ending4: are in the barn, still playing.

Answer format: ending1/ending2/ending3/ending4