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
Which of following is not a feature in diabetic retinopathy on fundus examination 
Select and explain. 
A. Microaneurysms, B. Retinal hemorrhages, C. Aeriolar dilatation, D. Neovascularisation
C: Aeriolar dilatation
Answer: C: Aeriolar dilatation 
Explanation: 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.