This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Beta blocker with intrinsic sympathomimetic activity is \nSelect and explain. \nA. Propranolol, B. Atenolol, C. Bisoprolol, D. Celiprolol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Beta blockers with intrinsic sympathomimetic activity are acebutolol, celiprolol, pindolol etc Ref: KD tripathi 8th ed.', 'role': 'assistant'}]