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': 'Double stranded RNA virus ? \nSelect and explain. \nA. Rotavirus, B. Measles virus, C. Mumps virus, D. Influenza virus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Rotavirus", 'role': 'assistant'}]