The correct option is B.
The lac operon in bacteria code for ENZYMES THAT BREAK DOWN LACTOSE.
Lac operon is an operon that is needed for the transportation and metabolism of lactose in E. coli and some bacteria. The lac operon is made up of three genes, which are transcribed as a single mRNA. These genes specify proteins which help the cells to use lactose. They produce an enzyme called beta galactosidase, which break down lactose into monosacharide units.
