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': 'In Japanese Encephalitis pigs acts as: \nSelect and explain. \nA. Amplifier, B. Definitive host, C. intermediate host, D. Any of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: (A)' Amplifier # In Japanese encephalitis, pig acts an amplifier, it doesn't manifest the disease.> Herons acts as reservoir hosts.> Human infection is a tangential 'dead end' event> Vertebrate hosts may include cattle and buffalo besides pig.", 'role': 'assistant'}]