Which of the Following Statements About Rhagoletis Pomonella Is True

Which of the following statements about Rhagoletis pomonella is true?

A) Larvae learn the odor of the fruit in which they grew up, and they locate such plants for mating and laying their eggs.
B) The apple- and hawthorn-feeding types of Rhagoletis can be considered incipient species because they show partial polyploidy.
C) The apple- and hawthorn-feeding types of Rhagoletis emerge at approximately the same time.
D) All of the above
E) None of the above