Multi-select problem: How does the next paragraph end?

A man and woman are shown in various shots riding on a piece of exercise equipment moving up and down. the people

Select from the following. (I). continue working out and the camera fades to black.; (II). are doing push ups on the machine while others watch on the side.; (III). ride around in alternating circles on the machine doing various taunts and tricks with the machine.; (IV). are riding down a steep incline on a machine and start walking out to the side as a man comes running on the machine and reenters.;
(I).