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: Microbiology
All the following are true about HIV except - 
Select and explain. 
A. A DNA virus belonging to lentivirus, B. Attacks CD4 lymphocytes, C. CD4: CD8 ratio is reversed, D. Mostly spread by heterosexual contact
A: A DNA virus belonging to lentivirus
Answer: A: A DNA virus belonging to lentivirus 
Explanation: Ans. is 'a' i.e., A DNA virus belonging to lentivirus . HIV is a RNA virus, belongs to family retroviridae and subfamily of lentivirus.