This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Polio virus is shed in stool up to - \nSelect and explain. \nA. 6 weeks, B. 8 weeks, C. 10 weeks, D. 12 weeks', 'role': 'user'}, {'content': "Answer: D \nExplanation: - the polio is transmitted by faecal oral route by contaminmates food , water or hands. - in faeces, the virus is excreted as long as 3-4 months. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:205 <\\p>", 'role': 'assistant'}]