Phagocytosis of microbes by macrophages is enhanced by

A)the binding of antibodies to the surface of microbes.
B)antibody-mediated agglutination of microbes.
C)the release of cytokines by activated B cells.
D)the binding of antibodies to the surface of microbes and antibody-mediated agglutination of microbes only.
E)the binding of antibodies to the surface of microbes, antibody-mediated agglutination of microbes, and the release of cytokines by activated B cells.