This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology (RNA Virus Pa-1,2 & Miscellaneous Viruses), Subject name: Microbiology
[{'content': 'Enterovirus 72 is: \nSelect and explain. \nA. Hepatitis A, B. Hepatitis B, C. Hepatitis C, D. Hepatitis E', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hepatitis A virus was originally classified as Enterovirus type 72 but is now assigned to a separate genus Hepatovirus in the family Picornaviridae. Picornaviruses are Icosahedral, 28-30 nm (small size), nonenveloped single stranded RNA viruses; Linear positive sense RNA genome. Hepatitis B : belongs to Hepadnaviridae , DNA virus. Hepatitis C : belongs to Flaviviridae, RNA virus. Hepatitis E: belongs to Hepeviridae , RNA virus.', 'role': 'assistant'}]