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': 'Besides its propeies of decreasing intraocular pressure, timolol is preferred in the treatment of glaucoma because it- \nSelect and explain. \nA. Produces no miosis, B. Possess membrane stabilizing activity, C. Increases outflow of aqueous humor, D. Is a selective beta-adrenoceptor blocker', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Produces no miosis", 'role': 'assistant'}]