This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': 'Drug of choice in Belladonna poisoning is - \nSelect and explain. \nA. Neostigmine, B. Physostigmine, C. Methacholine, D. Atropine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Signs of symptoms, treatment, and postmortem appearances in Atropa belladonna (deadly nightshade) and Hyoscyamus niger are same as datura.\nSpecific antidote is physostigmine.', 'role': 'assistant'}]