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': 'Diabetes mellitus is associated with: \nSelect and explain. \nA. Hard exudates, B. Neovascularisation, C. Glaucoma, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A. i.e. Hard exudates B. i.e. Neovascularization C. i.e. Glaucoma', 'role': 'assistant'}]