Which of the following is an example of a prefertilization barrier to reproduction?

A. A female mammal is unable to carry a hybrid offspring to term;

B. Hybrid plants produce only sterile pollen;

C. A hybrid between two bird species cannot perform a mating display;

D. A male fly of one species performs a “wing-waving” display that does not convince a female of another species to mate with him;

E. A hybrid embryo is not able to complete development