please help
In hamsters the allele for a brown coat color (B) is dominant over the allele for a tan coat color
(b). If a tan hamster is crossed with a heterozygous brown hamster, which of the following
genotypic ratios can be expected?

a. 1 BB: 2 Bb: 1 bb

b. 2 BB: 0 Bb: 2 bb

c. 2 BB: 1 Bb: 0bb

d. 0 BB: 2 Bb: 2 bb