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

A woman is talking about an elliptical exercise machine specially designed for women. alongside her

Options are:
A). are several other companies and companies that are shown discussing the technology.;
B). stands a man playing the instrument as she explains.;
C). is the pro fitness expert who is demonstrating how the machine works.;
D). are several pictures that include a man, computers, and several different settings.;
The answer is:
C).