GMAT Sentence Correction (SC) | Re: In the Music Box volleyball game, players can

In the Music Box volleyball game, players can hitthe ball with their hands while they are on their side of the net, but they have to butt it with their heads to hit it over the net.
A. ball with their hands while they are on their side of the net, but they have to butt it with their heads to hit
B. ball with their hands while it is on their side of the net, but they have to butt it with their heads to hit
C. ball using their hands while it is on their side of the net, but they have to butt them