Nicotinic Cholinergic Receptors Case Study

Which of the following statements is true about nicotinic cholinergic receptors?
a. They are located in the SA and AV nodes and activated by acetylcholine release from the parasympathetic nervous system.
b. They are linked to G-proteins that activate secondary messenger systems that lead to a target cell response.
c. They are located in the ventricular myocardium and activated by norepinephrine release from the sympathetic nervous system.
d. They are located on the motor end plate of skeletal muscle which is innervated by the somatic nervous system.
e. They are located in the arteriolar smooth muscle and are responsible for arteriolar resistance.