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
Not a DNA oncovirus ? 
Select and explain. 
A. HTLV, B. HBV, C. HCV, D. HPV
A: HTLV
Answer: A: HTLV 
Explanation: Ans. is 'a' i.e., HTLV Human T-cell leukemia virus (HTLV) is a RNA oncogenic virus.