In Yeast,which of These Is NOT a Function of MAT

Multiple Choice

In yeast,which of these is NOT a function of MAT genes?

A) controlling the expression of structural genes in a and α cells
B) MATa locus encoding a regulatory protein (a1) that affects only diploid cells
C) MATa locus encoding a regulatory protein (a1) that affects both haploid and diploid cells.
D) MATα allele encoding a regulatory protein (α2) that represses expression of a specific genes
E) None of the answer options are correct.