Please choose the correct ending to complete the given sentence: Using the rowing machine: A man is seated at equipment inside a gym. he

Ending1: is using a rowing machine and he talks about it. Ending2: is pulling on a set of parallel bars. Ending3: uses a machine to punch and kick while exercising. Ending4: uses a machine to flexible and rotate his body around while sitting and pushing the equipment.

Answer format: ending1/ending2/ending3/ending4