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: Microbiology
Atopy is mediated by ? 
Select and explain. 
A. IgE, B. IgD, C. IgM, D. IgA
A: IgE
Answer: A: IgE 
Explanation: Ans. is 'a' i.e., IgE