This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Which of the following is not a cholinergic action? \nSelect and explain. \nA. Salivation, B. Sweating, C. Mydriasis, D. Bradycardia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Miosis is produced by M3 receptor activation, not mydriasis Ref: KDT 7th ed pg 101', 'role': 'assistant'}]