H5P Content 2410

A partial diploid strain of E. coli has one copy of the lac operon with a mutant promoter sequence (genotype lacI⁺ P^- O⁺ lacZ⁺) and a plasmid with a mutant lacI repressor and wild-type operon sequences (genotype lacI^- P⁺ O⁺ lacZ⁺). Which statement describes the expression of lacZ in these cells?

LacZ will be transcribed in the presence of lactose, but not when lactose is absent.
LacZ cannot be transcribed, even in the presence of lactose.
LacZ will be constitutively transcribed, even in the absence of lactose.