This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Type I hypersensitivity, the mediator is: 
Select and explain. 
A. IgE, B. IgE, C. IgM, D. IgC
A: IgE
Answer: A: IgE 
Explanation: [A) (IgE) (161-AN 7th) (202-206-CP)Type of reactionClinical syndromeMediatorsType I - IgE1. Anaphylaxis2. Atopy P.K. reactionIgE, histamine and other pharmacological agents