Alex Is Listening to a Lecture on the History of Opiate

Alex is listening to a lecture on the history of opiate drugs,and he learns something that he finds very surprising.What has he heard the lecturer say?

A) "Heroin is a synthetic opiate made from morphine."
B) "Heroin has actually been legally available by prescription in the U.S.for years."
C) "Heroin is a synthetic drug that was originally developed as an antidepressant."
D) "Heroin is not really an opiate because it is synthetic and does not actually come from poppies."