Select the two correct statements out of the four (1-4) given below about lac operon.
1. Glucose or galactose may bind with the repressor and inactivate it
2. In the absence of lactose the repressor binds with the operator region
3. The z-gene codes for permease
4. This was elucidated Francois Jacob and Jacque Monod
The correct statements are :
A. b and d
B. a and d
C. b and c
D. a and c
