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
Hepatitis A virus is? 
Select and explain. 
A. Flavivirus, B. Calcivirus, C. Hepadnaviridae, D. Defective virus
C: Hepadnaviridae
Answer: C: Hepadnaviridae 
Explanation: Ans. is 'c' i.e., Hepadnaviridae Hepatitis B virus, abbreted HBV, is a double stranded DNA virus, a species of the genus Ohohepadnavirus, and a member of the Hepadnaviridae family of viruses