What effect would you expect if gene expression of the lac operon were completely repressed?

• A

  The cell would be more efficient without 'wasting' the energy required for the low level of Lac Z, LacY, and Lac A gene expression.

• B

  Allolactose would accumulate within the cell and become toxic.

• C

  Lactose would not be converted into the inducer and the operon could not be induced.

• D

  All of the above