This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'All are caused by common vectors, except - \nSelect and explain. \nA. Dengue fever, B. Yellow fever, C. KFD, D. Japanese encephalitis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Dengue, YF and JE are caused by Mosquitoes while KFD is caused by Ticks. Park's Textbook of Preventive and Social Medicine, 25th edition, Page No. 832", 'role': 'assistant'}]