Which of the Following Is True About Transcription

Multiple Choice

Which of the following is true about transcription?

A) A repressor protein activates transcription of a negatively regulated gene.
B) A positively regulated gene can be transcribed only in the absence of active repressor.
C) In the absence of an activator,a negatively regulated gene is poorly transcribed.
D) The initiation of transcription of regulated genes is controlled by regulatory proteins which bind to specific DNA sequences.
E) All of the above.