Bacterial with mutations in the lac operon have been created to study the functions of the different parts of the operon. In your analysis of one of the mutants, you noticed that the lac operon is transcribed, regardless of the presence of lactose, and the expression level increased in the absence of glucose. You theorize that the mutation is most likely to be in... the CAP site.

O lacl (repressor).
O laco (operator).
O All of these these mutations are possible.
Two of these mutations are possible.