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
[{'content': '. Immunity by vaccine of yellow fever is provided for: \nSelect and explain. \nA. 6 years staing from 6 days after vaccination, B. 6 years staing from 10 days after vaccination, C. 10 years staing from 6 days after vaccination, D. 10 years staing from 10 days after vaccination', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 10 years staing from 10 days after vaccination', 'role': 'assistant'}]