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: Pediatrics
In Protein Energy Malnutrition which of the following immunoglobulin is reduced most? 
Select and explain. 
A. IgG, B. IgM, C. IgA, D. IgE
C: IgA
Answer: C: IgA 
Explanation: Most common immunoglobulin reduced in Protein Energy Malnutriton is IgA which is involved in mucosal immunity. Low levels of IgA increases the susceptibility of infections in children with PEM.