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: Medicine
A patient with HIV infection complains of rapidly progressive painless visual loss.Fundus shows exudates and haemorrhage especially along blood vessels. In this case, the treatment of choice would be- 
Select and explain. 
A. Amphotericin B, B. Pentamidine, C. Acyclovir, D. Ganciclovir
D: Ganciclovir
Answer: D: Ganciclovir 
Explanation: None