Please choose the correct ending to complete the given sentence: Using the rowing machine: A buff young man is sitting on a machine with a sliding seat demonstrating weight lifting techniques. He then slides back, puts his feet in the ropes and starts to tie his shoes. once

Ending1: relaxed he talks to the camera and presents his other hands as he does this exercise. Ending2: done, he stands up from the machine and turns to the camera while talking. Ending3: complete, the man grabs the rope and moves back and forth while pulling out the rope to exercise. Ending4: finished, he begins stretching his legs out on the bar.

Answer format: ending1/ending2/ending3/ending4