E$.$ coli are growing in liquid medium with low glucose and high lactose. Which of the following statements is true regarding the lac operon?

Question $29$ options:

a$)$

Cyclic AMP levels are high, the lac repressor is not bound to the DNA, and lac operon expression is high.

b$)$

Cyclic AMP levels are low, CRP is DNA$-$bound, and lac operon expression is high.

c$)$

CRP and the lac repressor are bound to the DNA and lac operon expression is high.

d$)$

Allolactose is bound to the lac repressor, CRP is not bound to the DNA, and lac operon expression is low.