This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Epidemic of polio is due to - \nSelect and explain. \nA. Type I virus, B. Type II virus, C. Type III virus, D. Combine type II and III virus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Poliovirus tyoe 1 is responsible for most epidemics of paralytic poliomyelitis. Type 3 also causes but to a lesser extent. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:490", 'role': 'assistant'}]