Please choose the correct ending to complete the given sentence: Using the rowing machine: He sits on the bar of the machine and secures his feet into the foot rest. Then he begins by pulling the rope towards his chest while straightening his legs. then he

Ending1: swivels his hips up while extending his legs sideways. Ending2: repeats more stretches and eventually standing up to hold all of his parts together. Ending3: continues to use the machine in back and forth motion. Ending4: lifts the hips so that he doesn't accidentally fall off the bar.

Answer format: ending1/ending2/ending3/ending4