Antibodies Made by a Clone of Antibody-Producing Cells Derived from a Single

Antibodies made by a clone of antibody-producing cells derived from a single B lymphocyte have _________; each different B cell has membrane-bound antibodies with an affinity for __________.

A) identical antigen-combining sites,a different part of the antigen
B) variable antigen-combining sites,the same part of the antigen
C) identical antigen-combining sites,the same part of the antigen
D) variable antigen-combining sites,a different part of the antigen
E) different antigen-binding sites,the cell membrane