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': 'Beta adrenergic blocker having cardioselectivity, intrinsic sympathomimetic activity and membrane stabilizing property is: \nSelect and explain. \nA. Carvedilol, B. Atenolol, C. Acebutolol, D. Metoprolol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]