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': 'Latanoprost used topically in glaucoma primarily acts by – \nSelect and explain. \nA. Decreasing aqueous humour formation, B. Increasing uveoscleral outflow, C. Releasing pupillary block, D. Increasing trabecular outflow', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]