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': 'A patient came to the casualty with acute bronchial asthma after treatment for glaucoma .the probable drug maybe \nSelect and explain. \nA. Timolol, B. Betaxolol, C. Latanoprost, D. Anticholinesterase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Timolol is a non selective Beta blocker and can precipitate acute attacks of asthama in a suitable individual blockade of Beta 2 receptors. Betaxolol is a cardioselective Beta blocker and this less likely to cause this adverse effect Ref-KDT 6/e p139', 'role': 'assistant'}]