Zoologist: Horseflies are attracted to horizontally polarized light, which reflects off large, dark animals that they bite. This may explain why zebras evolved vertical stripes—the stripes cancel the horizontal polarization of light and thus make zebras less attractive to horseflies. In order to assess the plausibility of the zoologist's hypothesis, it would be most helpful to know whether
A. any insects other than horseflies are attracted to horizontally polarized light.
B. the vertical stripes on zebras make it easier for any insects other than horseflies to see them.
C. animals that horseflies commonly bite have evolved other means of reducing the impact an frequency of those bites.
D. any biting insects other than horseflies are strongly attracted to zebras.
E. zebras' vertical stripes provide camouflage protection against certain large predators potentially very dangerous to zebras.