Which statement best describes the difference between the sympathetic and parasympathetic nervous systems?

A.
The sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.
B.
The sympathetic system contains the brain and spinal cord and the parasympathetic system contains the peripheral nerves.
C.
The sympathetic system sends signals within the brain and the parasympathetic system sends signals between the brain and the body.
D.
The sympathetic system controls voluntary body movements and the parasympathetic system controls involuntary functions.