Write the next sentence in the following story.

A man is riding a recumbent bike in place. Another man is mixing something in a bowl. they

Available options:
(A). are using an electric measuring cup..
(B). turn around and start back onto the bike..
(C). step on the dirt bikes, and begin riding around..
(D). pretend the bike riding is controling the man who is mixing... The answer should be
(D).