This is a test of commonsense with single/multi-choices. Complete the next sentence:

Two men are seen speaking to the camera in front of an exercise equipment. one man

Choose your answer from: A). begins pulling the other man's hair while a dog watches on the side. B). gets on and begins demonstrating how to use it. C). begins moving the pedals while the camera continues to focus on the machine. D). is then seen riding the machine while bouncing it up and down.
The answer is:
B).