Attenuation Is Dependent Upon All of the Following EXCEPT

Multiple Choice

Attenuation is dependent upon all of the following EXCEPT

A) direct physical interaction between the ribosome and RNA polymerase.
B) pausing of a ribosome in the leader peptide due to low levels of an operon-specific charged tRNA.
C) no proteins other than those in ribosomes and RNA polymerase.
D) the formation of a stem loop structure in the nascent mRNA strand that acts as a transcriptional terminator.