This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'HCV is - \nSelect and explain. \nA. Enveloped RNA, B. Nonenveloped RNA, C. Nonenveloped positive strand RNA, D. Enveloped negative strand RNA', 'role': 'user'}, {'content': "Answer: A \nExplanation: HCV is a 50-60 nm virus with a linear single stranded RNA genome enclosed within a core and surrounded by an envelope carrying glycoprotein spikes. REF:ANATHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:549", 'role': 'assistant'}]