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: Pathology
Which one of the following is the most common immunologic type of multiple myeloma? 
Select and explain. 
A. IgG; Kappa light chain, B. IgA, Kappa light chain, C. IgD, Lambda light chain, D. IgM, type
A: IgG; Kappa light chain
Answer: A: IgG; Kappa light chain 
Explanation: None