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 are commonly seen in A/E: 
Select and explain. 
A. HIV, B. DM, C. Hypeension, D. CMV
D: CMV
Answer: D: CMV 
Explanation: D i.e. CMV Among HIV, DM, hypeension and CMV, CMV is the least common cause of cotton wool spots.