This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'The following are selective beta blockers except \nSelect and explain. \nA. Pindolol, B. Bisoprolol, C. Esmolol, D. Acebutolol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pindolol is nonselec ve b-blocker with intrinsic sympathomimetic activity', 'role': 'assistant'}]