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
Heat labile immunoglobulin 
Select and explain. 
A. IgA, B. IgG, C. IgE, D. IgM
C: IgE
Answer: C: IgE 
Explanation: Ans. is 'c' i.e., IgE Only heat labile Ig Inactivated at 56 degrees C in one hour.