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. Enterovirus, D. Defective virus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. Enterovirus', 'role': 'assistant'}]