Please choose the correct ending to complete the given sentence: Using the rowing machine: There's a person dressed in a blue track suit demonstrating how to use a rowing machine. He sits on the bar of the machine and secures his feet into the foot rest. then he

Ending1: kneels down and commences working out. Ending2: starts rowing while keeping his feet attached on the bar. Ending3: begins by pulling the rope towards his chest while straightening his legs. Ending4: does the same with his right foot inside the machine.

Answer format: ending1/ending2/ending3/ending4