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
All are true about poliovirus, except- 
Select and explain. 
A. Type I is responsible for most epidemics, B. Very difficult to eliminate type I, C. Type I responsible for vaccine paralytic poliomyelitis, D. Type I most commonly associated with paralysis
C: Type I responsible for vaccine paralytic poliomyelitis
Answer: C: Type I responsible for vaccine paralytic poliomyelitis 
Explanation: Here are some important points about poliovirus strains* (Type I, II, III)
Most common cause of epidemics* → Type I
Most difficult to eradicate*→Type I (because vaccine response to it is not good)
Most common cause of vaccine Induced paralytic poliomyelitis*→ Type III (due to mutation)
Most commonly associated with paralysis* →Type I.