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 one given below is a DNA virus ? 
Select and explain. 
A. Polio virus, B. Adenovirus, C. Parvovinis, D. Hepatitis A virus
B: Adenovirus
Answer: B: Adenovirus 
Explanation: Ans. is 'b' i.e., Adenovirus