In cattle, roan coat color (mixed red and white hairs)occurs in the heterozygous (Rr)offspring of red (RR)and white (rr)homozygotes. Which of the following crosses would produce offspring in the ratio of 1 red:2 roan:1 white?
A) red × white B) roan × roan C) white × roan D) red × roan E) The answer cannot be determined from the information provided.