Actinomycin D Inhibits the Growth of Bacteria by

Actinomycin D inhibits the growth of bacteria by

A) specifically inhibiting the initiation of RNA synthesis.
B) blocking the further elongation of polypeptide chain synthesis.
C) intercalating its phenoxazone ring between two G-C base pairs.
D) preventing the binding of aminoacyl-tRNA to the a-site of ribosomes.
E) inhibiting the peptidyl transferase activity of ribosomes.