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': 'All are features of acute morphine poisoning, except: Kerala 11; MAHE 12 \nSelect and explain. \nA. Pin-point pupil, B. Hyperpyrexia, C. Fall in blood pressure, D. Slow labored breathing', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Hyperpyrexia', 'role': 'assistant'}]