which is a true statement about memory cells?
A. Memory cells are mature monocytes.
B. Memory cells respond to antigens more rapidly than naive T cells.
C. Upon reexposure to a pathogen, memory cells engage in the T cell recall response, destroying the pathogen quickly.
D. The action of memory cells is the reason why we can get some diseases more than once.
E. There are far fewer memory cells than naive T cells.
