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': "Following are examples of human 'dead end' disease except \nSelect and explain. \nA. Leishmaniasis, B. Japanese encephalitis, C. Hydatid disease, D. Bubonic plague", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]