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 without local anaesthetic effect is: \nSelect and explain. \nA. Metoprolol, B. Pindolol, C. Propanolol, D. Timolol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Essentials of medical pharmacology Seventh edition, KD Tripathi Page no=153 Timolol is the prototype of ocular beta-blockers. Is non-selective and has no local anaesthetic or intrinsic sympathomimetic activity.', 'role': 'assistant'}]