For a Repressible Operon to Be Transcribed, Which of the Following

Multiple Choice

For a repressible operon to be transcribed, which of the following conditions must occur?

A) RNA polymerase must bind to the promoter and a corepressor must be present.
B) RNA polymerase and active repressor must occupy the promoter.
C) RNA polymerase must bind to the promoter, and the repressor must be inactive.
D) RNA polymerase must bind the inducer, and the repressor must be inactive.