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': 'Louse Transmits \nSelect and explain. \nA. Plague, B. KFD, C. Onchocerciasis, D. French fever', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]