All of the Following Apply to Attenuation Mechanisms, Except

Multiple Choice

All of the following apply to attenuation mechanisms, except :

A) They are used most often for operons for amino acid synthesis.
B) They involve the synthesis of proteins in the regulation of RNA synthesis.
C) The rate of RNA synthesis is regulated by the conformation of the protein being synthesized.
D) They require the presence of partially completed mRNA molecules.
E) All of these apply to attenuation mechanisms.