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': 'A 40 year old diabetic male present with vitrous haemorrhage. Most impoant cause for it is \nSelect and explain. \nA. Poterior vitreous detachment, B. CRVO, C. CRA trauma, D. Neovascularization of disc', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Neovascularization of disc', 'role': 'assistant'}]