Capping of B-Cell Receptors on the Surface of an Antigen-Exposed

Capping of B-cell receptors on the surface of an antigen-exposed B cell immediately causes what to occur?

A) VDJ gene switching, recombination, and hypermutation
B) neutrophil phagocytosis of the antigen
C) complement cascade signaling and antigen destruction
D) cell signaling cascade inducing cell proliferation and differentiation
E) T helper cell proliferation and T regulatory cell differentiation