In Lilies,white Flowers (W)are Dominant to Purple Flowers (W)

In lilies,white flowers (W) are dominant to purple flowers (w) .If two plants that are heterozygous for flower color are mated,the genotypic ratio of the offspring would be

A) 3:1.
B) 1:1.
C) 1:2:1.
D) 9:3:3:1.
E) 1:1:1:1.