Determine the most likely genotypes of the parents?

Black coat color in er Spaniels is governed by a dominant allele B and red coat color by its recessive allele b. Solid pattern is governed by an independently orting locus S, and spotted pattern by its recessive allele s. A solid black male is mated to a spotted black female and produces a litter of seven pups: six solid black and two solid red. Determine the most likely genotypes of the parents.