Please choose the correct ending to complete the given sentence: Elliptical trainer: A man is shown kneeling down speaking to the camera next to a piece of exercise equipment. he

Ending1: 's showing various grips and screws that you need to lay on the board when you peddle the machine. Ending2: points to the machine and changes around all the specs. Ending3: holds up a tube while speaking and showing off the equipment. Ending4: pushes himself forward and back against the equipment, spinning himself to and fro.

Answer format: ending1/ending2/ending3/ending4