Please choose the correct ending to complete the given sentence: Using the rowing machine: A man is riding a rowing machine in a gym. A finger briefly covers part of the camera lens. the man

Ending1: loses his balance and falls against the rowing machine. Ending2: then moves to the pedals on his machine. Ending3: briefly covers part of the lens. Ending4: continues to row as people walk by in the gym.

Answer format: ending1/ending2/ending3/ending4