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
Polio virus is shed maximum in stool up to 
Select and explain. 
A. 6 weeks, B. 12 weeks, C. 10 weeks, D. 8 weeks
B: 12 weeks
Answer: B: 12 weeks 
Explanation: None