Please choose the correct ending to complete the given sentence: Using the rowing machine: A man sitting on an exercise equipment. He put his feet on a holder, and put the strap on. he

Ending1: pull the bar, at the same time pushed his legs. Ending2: then slip off the harness, lifting his feet off the bike. Ending3: started to move it back and forth. Ending4: began walking down a track.

Answer format: ending1/ending2/ending3/ending4