Which Are Characteristics of the Generation of Clonal Diversity

Which are characteristics of the generation of clonal diversity?

A) The process involves antigens selecting those lymphocytes with compatible receptors.
B) The process allows the differentiation of cells into antibody-secreting plasma cells or mature T cells.
C) The process takes place in the primary (central) lymphoid organs (i.e., thymus and bone marrow) .
D) The process causes antigens to expand and diversify their populations.