Please choose the correct ending to complete the given sentence: Elliptical trainer: A piece of exercise equipment is put together through technology and then shown in real time. a person's hand

Ending1: is then shown pointing to the steps, and then guides them up the step or the tire. Ending2: the use the equipment for several seconds. Ending3: is holding a piece of exercise equipment and then his arm is shown with a different piece of exercise equipment. Ending4: turns a knob on the machine and begins running on the machine.

Answer format: ending1/ending2/ending3/ending4