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
Which is NOT an oncogenic virus- 
Select and explain. 
A. HTLV- 1, B. Herpes simplex, C. Papilloma virus, D. None
D: None
Answer: D: None 
Explanation: Ans. is 'None'