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
Positive sense nucleic acid genome is found in ? 
Select and explain. 
A. Polio virus, B. Papovavirus, C. Influenza, D. All
A: Polio virus
Answer: A: Polio virus 
Explanation: Ans. is 'a' i.e., Polio virus . Picorna virus has positive strand RNA. . Polio virus is a picorna virus.