What Happens When a Repressor Is Bound to the Operator

Multiple Choice

What happens when a repressor is bound to the operator?

A) RNA polymerase is prevented from transcribing the structural genes in the operon.
B) RNA polymerase transcribes the structural genes in the operon.
C) RNA polymerase increases the rate of transcription.
D) RNA polymerase decreases the rate of transcription.
E) None of these are correct.