Which Sentence Presents Characteristics of Sympathetic and Parasympathetic Systems, Respectively

Multiple Choice

Which sentence presents characteristics of sympathetic and parasympathetic systems, respectively?

A) The sympathetic system controls external stimuli, while the parasympathetic system controls internal stimuli.
B) The sympathetic system generally predominates during physical activity, while the parasympathetic system predominates during nonphysical activity.
C) The sympathetic system and the parasympathetic systems both release norepinephrine.
D) The sympathetic system is under voluntary control, and the parasympathetic system is under involuntary control.