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': 'All the following drugs are used in acute anterior uveitis except – \nSelect and explain. \nA. Pilocarpine, B. Atropine, C. Timolol, D. Propranolol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]