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
Cotton wool spots in diabetic retinoaEUR' pathy are due to: 
Select and explain. 
A. Retinal nerve infarcts, B. Retinal holes, C. Retinal haemorrhage, D. Macular degeneration
A: Retinal nerve infarcts
Answer: A: Retinal nerve infarcts 
Explanation: Retinal nerve infarcts