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: Social & Preventive Medicine
Which of the following is false regarding Oral Polio Vaccine (OPV)? 
Select and explain. 
A. Residual neuro-paralysis is a complication, B. It is a killed vaccine, C. Requires sub- zero temperature for storage long term, D. Induces intestinal and humoral immunity
B: It is a killed vaccine
Answer: B: It is a killed vaccine 
Explanation: None