A student asks the pharmacology instructor to explain the action of anticholinergic agents.What would be the instructor's best response?

Choice A rationaleSerotonin does not compete with anticholinergic agents at muscarinic acetylcholine receptor sites; anticholinergics target these receptors to inhibit the parasympathetic nervous system.Choice B rationaleAnticholinergics do not increase norepinephrine at the neuromuscular junction.Choice C rationaleNicotinic receptors are primarily affected by different classes of drugs, such as neuromuscular blockers.Choice D rationaleAnticholinergics inhibit the actions of the parasympathetic nervous system by blocking muscarinic receptors, reducing bodily functions like saliva production, digestion, and urination.