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': 'Non-enveloped ss-RNA virus is- \nSelect and explain. \nA. Picornavirus, B. Poxvirus, C. Retrovirus, D. Bunyavirus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Non-enveloped RNA viruses → PCR - Picorna, Calci, Reo.', 'role': 'assistant'}]