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': 'To eradicate measles the percentage of population to be caccinated is at least -----------%- \nSelect and explain. \nA. 70, B. 80, C. 85, D. 95', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]