Monoclonal Antibodies May Be Used to Treat Cancer in All

Monoclonal antibodies may be used to treat cancer in all of the following ways EXCEPT

A) directly binding of monoclonal antibodies may trigger apoptosis or antibody-dependent cell-mediated cytotoxicity.
B) monoclonal antibodies compete with growth factors to bind receptors on tumor cells.
C) monoclonal antibodies may prevent the formation of new blood vessels to tumors.
D) monoclonal antibodies may recruit T_H cells to a developing tumor.
E) monoclonal antibodies may serve as a vector to target tumor cells for toxin mediated therapy.