This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Descending order of types of viruses causing paralytic polio 
Select and explain. 
A. Type 1, type 2, type 3, B. Type 2, type 1. type 3, C. Type 1, type 3, type 2, D. Type 2, type 3, type 1
C: Type 1, type 3, type 2
Answer: C: Type 1, type 3, type 2 
Explanation: (C) Type 1, type 3, type 2 # POLIOMYELITIS> Definition: Poliomyelitis is an acute infections disease caused by enterovirus.> Poliovirus is an RNA virus with three distinct serotypes v/z.1,2 and 3.> Type 1 is the most frequent and type 2, the least common cause of paralytic poliomyelitis.