Incomplete Dominance Is Exhibited When the Heterozygote Has a Phenotype

Incomplete dominance is exhibited when the heterozygote has a phenotype intermediate between the phenotypes of the two homozygotes. When a trait exhibits incomplete dominance, a cross between two heterozygotes produces a 1 : 2 : 1 phenotypic ratio in the progeny
-If an F₁ eggplant in Figure above is used in a testcross, what proportion of the progeny from this cross will be white?

A) All the progeny
B) 1/2
C) 1/4
D) 0