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': 'Drug of choice for mushroom poisoning is: \nSelect and explain. \nA. Atropine, B. Physostigmine, C. Adrenaline, D. Carbachol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref: KD Tripathi pharmacology 7th edition (page.no: 104) Mushroom poisoning causes muscarinic actions. It is reversed by Atropine which is a muscarinic antagonist.', 'role': 'assistant'}]