Please choose the correct ending to complete the given sentence: Using the rowing machine: A woman is seen sitting on a piece of exercise equipment and rowing back and fourth. her working out

Ending1: is shown while a man watches her from behind. Ending2: continues and two men are then seen sitting behind her. Ending3: are shown in several more clips. Ending4: is shown on her knees facing the camera.

Answer format: ending1/ending2/ending3/ending4