[A]: In vertebrates, motor fibres to striped muscle, parasympathetic fibres to smooth muscle, and preganglionic sympathetic fi- bres are cholinergic.
[R]: Cholinergic designates the type of nerve fibre that releases acetylcholine from its end- ing when stimulated by a nerve impulse
A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false