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': 'Amplifier for Japanese encephalitis - \nSelect and explain. \nA. Horse, B. Pigs, C. Dogs, D. Monkey', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Pigs In Japanese encephalitiso Pigso Cattle and buffaloso Mano Herons- Amplifiers- Mosquito attractants- Incidental dead-end host- Reservoir hosts", 'role': 'assistant'}]