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
Immunoglobulin implicated in atopy and anaphylaxis is: 
Select and explain. 
A. IgE, B. IgM, C. IgG, D. IgA
A: IgE
Answer: A: IgE 
Explanation: None