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
Antibody transfer mother to fetus - 
Select and explain. 
A. IgG, B. IgM, C. IgD, D. IgA
A: IgG
Answer: A: IgG 
Explanation: Ans. is 'a' i.e., IgG