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': 'All are caused by common vectors, except \nSelect and explain. \nA. Dengue fever, B. Yellow fever, C. KED, D. Japanese encephalitis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., KFD o KFD is transmitted by hard tick where as all else are transmitted by mosquitoes.", 'role': 'assistant'}]