Which of the following could Margaret Bastock conclude from her research examining the courtship behavior of wild type and "yellow" forms of fruit flies?

A) Wild type males had lower mating success than the rarer yellow forms males
B) Yellow males had higher mating success than wild type males
C) Variation in the behavioral phenotypes of males was not associated with the two different genotypes of the males
D) Both types of males have different genotypes but similar mating success
E) Variation in the genotypes was associated with the variation in the behavioral phenotypes