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: Pharmacology
[{'content': 'Buprenorphine is calssified as - \nSelect and explain. \nA. Paial agonist at m receptor, B. Paial agonist at K receptor, C. Full agonist at m receptor, D. Full agonist at K receptor', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Paial agonist at receptor o Buprenorphine is paial agonist on mu receptor and antagonist at Kappa receptor.", 'role': 'assistant'}]