Identify the correct statement about the autonomic nervous system (SNA) based on the given information: The receptors al are coupled to G protein ...

Identify the correct statement about the autonomic nervous system (SNA) based on the given information:

The receptors al are coupled to G protein and stimulate the enzyme production.
The stimulation in the adrenal medulla results in the activation of the receptor.
The majority of post-ganglionic fibers are parasympathetic.
The neurotransmitter released by SNA fibers is called receptor.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) Only IV is correct.
e) I, II, III, and IV are correct.