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': 'First line of drug for angle closure glaucoma is \nSelect and explain. \nA. Acetazolamide, B. Physostigmine, C. Brimonidine, D. Atropine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref: HL Sharma 3rd ed pg no:140 For acute angle-closure glaucoma, the best option is acetazolamide oral or IV for chronic glaucoma, DOC is phf2 alpha analogs like latanoprost', 'role': 'assistant'}]