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': 'Which of following is not a feature in diabetic retinopathy on fundus examination \nSelect and explain. \nA. Microaneurysms, B. Retinal hemorrhages, C. Aeriolar dilatation, D. Neovascularisation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Aeriolar dilatation In diabetic retinopathy aeriolar changes consist of narrowing Q (not dilation) silver-wiring and obliteration resembling branch retinal aery occlusion. And venous changes are bending, looping and sausage like segmentation.', 'role': 'assistant'}]