This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Which one given below is a DNA virus? 
Select and explain. 
A. Polio virus, B. Adenovirus, C. Parvovirus, D. Hepatitis A virus
B: Adenovirus
Answer: B: Adenovirus 
Explanation: Adenovirus are grp of medium sized non envolped double stranded DNA REF:ANANTHA NARAYAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO.480