Which of the Following Is a Description of the Principle

Which of the following is a description of the principle of antagonism as it relates to the autonomic nervous system?

A) If sympathetic impulses tend to inhibit the effector, parasympathetic impulses tend to stimulate it.
B) If sympathetic impulses inhibit autonomic centers, parasympathetic impulses tend to stimulate them.
C) If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it.
D) If sympathetic impulses initiate nerve conduction, parasympathetic impulses stop nerve conduction.