How Are Memory B Cells Able to Persist for Many

Multiple Choice

How are memory B cells able to persist for many years?

A) Memory B cells are continuously stimulated by cytokines released from helper T cells.
B) Memory B cells undergo hypermutation, which allows them to survive indefinitely.
C) Memory B cells use gene rearrangement to prevent apoptosis from occurring.
D) Memory B cells with receptors that match with antigen produce anti-apoptosis protein.