This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Which of the following is the pathogen responsible for blindness in advanced HIV infections? (NOT RELATED) 
Select and explain. 
A. Cytomegalovirus, B. Epstein-Barr virus, C. Fungus, D. Toxoplasma
A: Cytomegalovirus
Answer: A: Cytomegalovirus 
Explanation: .