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': 'Virus which has more than one serotypes ? \nSelect and explain. \nA. Measles, B. Mumps, C. Rubella, D. Influenza', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'd' i.e., Influenza Influenza virus is an enveloped RNA virus containing 8 pieces (8 segments) of single stranded RNA. There are three viral subtypes : (i) Type A (causes all pandemics and most epidemics); (ii) Type B; and (iii) Type C (not circulating currently).", 'role': 'assistant'}]