Which of the Conditions Would Result in the Greatest Amount

Multiple Choice

Which of the conditions would result in the greatest amount of transcription of the lac operon? $$\begin{array} { l c c } & \text { [glucose } ] & \text { [lactose } ] \\ \text { I. } & \text { high } & \text { high } \\\text { II. } & \text { low } & \text { low } \\\text { III. } & \text { high } & \text { low } \\\text { IV. } & \text { low } & \text { high }\end{array}$$

A) I
B) II
C) III
D) IV