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 malignant glaucoma is: \nSelect and explain. \nA. Pilocarpine, B. Cyclocryotherapy, C. Vitreous aspiration, D. Trabeculectomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Vitreous aspiration', 'role': 'assistant'}]