Why does passive transfer of antibodies not lead to the recipient producing antigen-specific memory B cells?

• A. Because transferred antibodies permanently occupy all B cell receptors and force recipient B cells into apoptosis, which paradoxically creates immediate long-term memory without new B cell generation.
• B. Because passive antibody transfer always contains immunosuppressive cytokines that directly remove all antigen-specific T cells, and memory formation requires only T cells not B cells in the recipient.
• C. Because passive transfer changes the host genome in a way that prevents expression of any immunoglobulin genes in the recipient forever, thereby blocking memory formation systemically.
• D. Because passive transfer provides ready-made antibodies without presenting antigen to the recipient's B cells in a way that activates clonal expansion and germinal center formation, so the recipient's adaptive system is not engaged to create memory B cells.

Answer: (D)