This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'The most potent Narcotic Analgesic is \nSelect and explain. \nA. Morphine, B. Buprenorphine, C. Codeine, D. Pentazocine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Buprenorphine', 'role': 'assistant'}]