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': 'Treatment of choice in acute congestive glaucoma – \nSelect and explain. \nA. Pilocarpine, B. Laser iridotomy, C. Timolol, D. Trabeculoplasty', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Treatment of choice for PACG is peripheral laser iridotomy.', 'role': 'assistant'}]