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': 'Moality rate in measles encephalitis is - \nSelect and explain. \nA. 1-2%, B. 10-20%, C. 20-30%, D. 30-40%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b i.e., 10-20% "The moality rate in encephalitis associated with measles is about 10-20 %" -- Park "Case fatality rate in acute measles encephalitis is 15%" wwwcdc.gov.', 'role': 'assistant'}]