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': 'Which is ssrna unenvloped virus - \nSelect and explain. \nA. HBV, B. HEV, C. I-ICV, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., HEV HEV and HAV are non-enveloped RNA viruses.", 'role': 'assistant'}]