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': 'All oncogenic viruses containing RNA belongs to? \nSelect and explain. \nA. Picornaviridae, B. Herpesviridae, C. Retroviridae, D. All', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Retroviridae See above explanation.", 'role': 'assistant'}]