This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'Sympathetic postganglionic neurotransmitter in sweat gland \nSelect and explain. \nA. Epinephrine, B. Nor- epinephrine, C. Serotonine, D. Acetylcholine', 'role': 'user'}, {'content': "Answer: D \nExplanation: sympathetic postganglionic neurotransmitter in sweat glands is Ach Ref: Ganong's review of medical physiology, 23rd edition Page no:134", 'role': 'assistant'}]