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: Medicine
[{'content': 'A-65, year old farmer presents with sweating, hypothermia and pulse rate of <50/min treatment is - \nSelect and explain. \nA. Physostigmine, B. Neostigmine, C. Atropine, D. Pilocarpine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]