In rats, the following genotypes of two independently assorting
autosomal genes determine coat color as follows: A-B- (gray), A-bb
(yellow), aaB- (black), aabb (cream). A third gene pair on a
separate autosome determines whether or not any color will be
produced. DD and Dd genotypes allow color according to the
expression of the A and B alleles. However, the dd genotype results
in albino rats regardless of alleles of the A and B alleles
present.

Using the information on coat color in rats from the previous
problem, determine the genotypes and phenotypes of the parents who
produced the following offspring:   

3/8 black
3/8 cream
2/8 albino