Two codominant alleles determine coat colour in cattle. Genotype $C^R C^R$ gives cattle a red coat. Genotype $C^W C^W$ gives cattle a white coat. Genotype $C^R C^W$ produces a roan coat; such cattle have both red hairs and white hairs in the coat. A red cow is mated with a roan bull. What is the expected ratio of coat colour in the offspring?
- A50% red, 50% white
- B100% red
- C50% red, 50% roan
- D100% roan