Which of the Following Environments Would Most Likely Lead to the Transcription

Multiple Choice

Which of the following environments would most likely lead to the transcription of the lactose operon?

A) The cyclic AMP level is high, and the lactose level is low.
B) The cyclic AMP and lactose levels are both high within the cell.
C) There is glucose but no lactose in the cell.
D) There is more glucose in the cell than lactose.
E) The cyclic AMP levels are low.