Choose your answer?

A sound is heard when you pluck a string on a guitar. What will happen to the sound if the same string is plucked harder?

Choose from:
(A). The volume will stay the same, and the pitch will be higher..
(B). The pitch will stay the same, and the volume will be higher..
(C). Both the pitch and the volume will be higher..
(D). Both the pitch and the volume will stay the same..
(B).