This figure shows one reason among others why pea plants (Pisum sativum)are a good species for genetics studies.In reference to information given in the text,pea plants are good for genetics studies because

A) they have many distinctly identifiable forms of genetic traits.
B) growth of pea plants is simple and easy.
C) All of the answer choices are correct.
D) they can be self-fertilized for true-breeding genetic traits.
E) they produce large numbers of offspring (the peas).