This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Microbiology
[{'content': 'Vertebrate reservoir of Japanese encephalitis is: \nSelect and explain. \nA. Rat, B. Pig, C. Horse, D. Monkey', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Pig > Pigs are vertebrate reservoirs as well as amplifier hosts for Japanese encephalitis virus.', 'role': 'assistant'}]