Clonal selection of B cells activated by antigen exposure leads ...

[futuristic]

Clonal selection of B cells activated by antigen exposure leads to production of
A) large numbers of neutrophils.
B) large quantities of the antigen initially recognized.
C) vast numbers of B cells with random antigen-recognition receptors.
D) long-lived erythrocytes that can later secrete antibodies for the antigen.
E) short-lived plasma cells that secrete antibodies for the antigen.

[aero]

I remember it was E