This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Buprenorphine is: \nSelect and explain. \nA. paial agonist at mu Receptor, B. Paial agonist at kappa Receptor, C. Full Agonist at mu Receptor, D. Full Agonist at kappa Receptor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref : Katzung 11/e p546 *Buprenorphine appears to be a paial agonist at mu Receptor and antagonist at kappa Receptor.', 'role': 'assistant'}]