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': 'HCV virus is ? \nSelect and explain. \nA. Enveloped DNA, B. Enveloped RNA, C. Nonenveloped DNA, D. Nonenveloped RNA', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Hepatitis C virus is a small, enveloped, positive-sense single-stranded RNA virus of the family Flaviviridae.", 'role': 'assistant'}]