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': 'Pin-point pupils are seen in: Kerala 09; Punjab 09; UP 10 \nSelect and explain. \nA. OPC poisoning, B. Opium poisoning, C. Alphos poisoning, D. Dhatura poisoning', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Opium poisoning', 'role': 'assistant'}]