In the gene locus for eye colour in humans, the allele for brown eye is dominant over the allele for blue eyes. If a homozygous brown-eyed girl has a brother with blue eyes, what are the likely phenotypes of there parents'eye colour (Eye colour is not a sex linked trait)

• A.Both parents have blue eyes
• B.Their father has blue eyes and their mother has brown eyes
• C.both parents have brown eyes
• D.Their mother has the blue eyes and their father has the brown eyes
• E.