Drosophila (Fruit Flies)usually Have Long Wings (+)But Mutations in Two

Drosophila (fruit flies) usually have long wings (+) but mutations in two different genes can result in bent wings (bt) or vestigial wings (vg) . If a homozygous bent wing fly is mated with a homozygous vestigial wing fly, which of the following offspring would you expect?

A) All +bt +vg heterozygotes
B) 1/2 bent and 1/2 vestigial flies
C) All homozygous + flies
D) 3/4 bent to 1/4 vestigial ratio
E) 1/2 bent and vestigial to 1/2 normal