Please choose the correct ending to complete the given sentence: Using the rowing machine: An introduction is seen with logos running across the screen and a magazine cover. An athlete in black pants sits on a rowing machine and pulls on a weighted cable. the athlete

Ending1: pulls the cable and actually stops getting up off the machine. Ending2: holds on with his hands while kneeling and leans back to look further into the machine. Ending3: demonstrates pull ups until an improvement is made. Ending4: switches to a one arm rowing exercise on the machine.

Answer format: ending1/ending2/ending3/ending4