Which of the Following Statements Is Consistent with the Process

Which of the following statements is consistent with the process of clonal selection?

A) The specificity of a lymphocyte antigen receptor changes to accommodate the structure of an antigen that binds to it.
B) Many different antigen receptors with different specificities are expressed on each lymphocyte.
C) Lymphocytes do not express antigen receptors on their cell surfaces until after exposure to antigen.
D) The diversity of the lymphocyte repertoire for antigens is very small before exposure to antigen but increases significantly after antigen exposure.
E) The diversity of the lymphocyte repertoire for antigens is very large before exposure to antigen,with millions of different clones of lymphocytes,each having a different specificity.