Which of the Following Is NOT True of Progestins

Which of the following is NOT true of progestins?

A) Progesterone is an artificially produced progestin.
B) The advantage of using progestin over progesterone is that a lower dose is needed to produce the desired response.
C) They are used to treat amenorrhea from hormone imbalances, for contraception, and for HRT with estrogen preparations.
D) They come in milligrams in oral contraceptives.
E) All of the above statements are true.