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: Ophthalmology
[{'content': 'Contraindication of topical beta blockers \nSelect and explain. \nA. Hypeension, B. Asthma, C. Tachycardia, D. Hypotension', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Asthma', 'role': 'assistant'}]