Skeletal muscle is controlled by the organism.

Which best describes what this means in terms of movement?

A) Any muscle attached to the skeleton is voluntary and may be used for movement.

B) Some of the muscle attached to the skeleton is involuntary and may be used for movement.

C) Some of the muscle attached to the skeleton is voluntary and may be used for movement.

D) All of the muscles attached to the skeleton are involuntary and may be used for movement.