Please choose the correct ending to complete the given sentence: Using the rowing machine: An athlete in black pants sits on a rowing machine and pulls on a weighted cable. The athlete switches to a one arm rowing exercise on the machine. the man

Ending1: stops to release the cable as he parks his bike on the ground. Ending2: switches to a one leg stance on the machine. Ending3: does a handstand on the machine and stands up. Ending4: back flips on the machine as he works out.

Answer format: ending1/ending2/ending3/ending4