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': 'Drug of choice for acute congestive glaucoma is : \nSelect and explain. \nA. 1-2% pilocarpine, B. Timolol, C. Levobunanol, D. Atropine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. 1-2% Pilocarpine', 'role': 'assistant'}]