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': 'Vitrectomy is done in case of vitreous hemorrhage if not absorbed within \nSelect and explain. \nA. 1 month, B. 2 months, C. 3 months, D. 12 months', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vitrectomy is indicated if vitreous haemorrhage does not absorb in 3 months.', 'role': 'assistant'}]