Why is class switching of antibodies during an infection important for effectively fighting the infection?

• A. Class switching allows the immune system to choose the most effective antibody class for fighting the infection.
• B. Different antibody classes have different strengths and functions.
• C. Certain antibody classes will not bind or recognize specific antigens/pathogens.
• D. A and B.
• E. B and C.
• F. A and C.
• G. All of the above.