The Main Reason That Drug Companies Today Produce Only About

The main reason that drug companies today produce only about half as many new drugs each year compared to previous decades is:

A) there are fewer diseases that drugs can be made for
B) people are turning to natural medicine rather than drugs
C) the high cost and long time frame involved in clearing all the FDA hurdles to market a new drug
D) the lack of science majors graduating in the United States
E) the economic downturn