The clonal selection theory of antibody diversity says:

A.	B cell precursors randomly rearrange variable coding parts of antibody genes. Afterwards, antigen binds to a clone with specific membrane antibody, resulting in differentiation to antibody secreting plasma cells
B.	The antigen causes a nonspecific clone of B lymphocytes to proliferate and secrete antibody molecules capable of binding to any foreign antigen
C.	Antigen causes the growth of a clone of lymphocytes which then rearrange DNA, creating a gene coding for a specific antibody
D.	A clone of macrophages with specific receptor for antigen phagocytoses antigen, then rearranges DNA to generate specific antibody-coding genes