In E Coli, an Isomer of Lactose Binds with the Lactose

In E. coli, an isomer of lactose binds with the lactose operon:

A) repressor, preventing it from binding to the operator. This allows the lacZ and lacY genes to be transcribed.
B) operator, preventing it from binding to the repressor. This allows the lacZ and lacY genes to be transcribed.
C) repressor, helping it bind to the operator. This prevents the lacZ and lacY genes from being transcribed.
D) operator, preventing RNA polymerase from being recruited. This prevents the lacZ and lacY genes from being transcribed.
E) operator, recruiting RNA polymerase. This allows the lacZ and lacY genes to be transcribed.