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': 'True about polio except - \nSelect and explain. \nA. Paralytic polio is most common, B. ssRNA virus, C. OPV&IPV are available, D. Polio drops given only in <3 year', 'role': 'user'}, {'content': 'Answer: D \nExplanation: OPV given to child of age 0-5 years REF:<\\p> MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.490', 'role': 'assistant'}]