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': 'All are true about J.E. Except - \nSelect and explain. \nA. Transmitted by culex mosquitoes, B. Death occur in 9 days, C. Case fatality rate 80 to 90%, D. Duration of prodromal symptoms 1-6 days', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Case fatality rate varies between 20-40 per cent. Ref: PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition pg 286', 'role': 'assistant'}]