When a "New" Antigen First Challenges the Immune System,if the Primary

Multiple Choice

When a "new" antigen first challenges the immune system,if the primary immune response produces B cells,what are the fates of those B cells?
I-Some of the B cells become plasma cells that secrete antibodies.
II-Some of the B cells become memory cells and can produce a swifter response if the body encounters that particular antigen again.
III-Some of the B cells secrete chemicals called pyrogens that travel to the brain inducing a fever.

A) just II
B) just I
C) II and III
D) I and II
E) I,II,and III