Please choose the correct ending to complete the given sentence: Using the rowing machine: A man sits on a rowing machine in a gym and talks to the camera while demonstrating how to use a rowing exercise machine. the man

Ending1: looks to the camera and gives a thumbs up. Ending2: begins to exercise on the machine slowly, all while talking to the camera, eventually building up to a more fast paced work out on the same machine. Ending3: adjusts the using of a direction lever in a rowing machine. Ending4: demonstrates the moves way a person performs and annoys while talking.

Answer format: ending1/ending2/ending3/ending4