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 option for glaucoma includes all except: \nSelect and explain. \nA. Trabeculectomy, B. Trabeculotomy, C. Vitrectomy, D. Viscocanalostomy /Sclerectomy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C. i.e. Vitrectomy', 'role': 'assistant'}]