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': "Which of the drug's main action is increasing uveo-scleral outflow \nSelect and explain. \nA. Apraclonidine, B. Latanoprost, C. Timolol, D. Brinzolamide", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref: HL Sharma 3rd ed pg no:140 DOC for chronic glaucoma is latanoprost- PGF2 alpha analog It acts by increasing uveoscleral outflow of aqueous humor', 'role': 'assistant'}]