Once a B cell has been selected via a T Helper cell, it undergoes clonal expansion and differentiation. This means:

A. All B cells that don’t fit the appropriate antigen are destroyed by NK Cells

B. The B Cell is activated and awaits a subsequent encounter with the pathogen before it replicates

C. B cells replicate and produce large numbers of memory cells as well as some plasma cells

D. B cells replicate and produce large numbers of plasma cells as well as some memory cells