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
[{'content': 'Hepatitis A virus is? \nSelect and explain. \nA. Flavivirus, B. Calcivirus, C. Hepadnaviridae, D. Defective virus', 'role': 'user'}, {'content': "Answer: C \nExplanation: 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", 'role': 'assistant'}]