A Female Fly, Full of Fertilized Eggs, Is Swept by High

A female fly, full of fertilized eggs, is swept by high winds to an island far from the mainland. She is the first, and only, fly to arrive on this island. Thousands of years later, her numerous offspring occupy the island, but none of them resembles her. There are, instead, several species and their geographic ranges overlap. Each species eats a different kind of food. None of the species can fly and the balancing organs of males differ among species and are now used in courtship displays. Fly species W produces fertile offspring with species Y, but not with species X or Z. Furthermore, X and Z do not hybridize. Which of the following statements about species W and Y is most likely to be accurate?

A) Species W and Y have genomes that are too dissimilar for successful meiosis to occur in hybrid flies.
B) Species W and X have more genetic similarity with each other than either does with the other two species.
C) Species W and Y may fuse into a single species if their hybrids remain fertile over the course of many generations.
D) Species W and Y will both be selected to avoid mating with each other.