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
Example for "AMPLIFIER HOST" - 
Select and explain. 
A. Pig in JE, B. Dog in hydatid disease, C. Cattle in mad cow disease, D. Rat in plague
A: Pig in JE
Answer: A: Pig in JE 
Explanation: None