What Is the Primary Reason for Recent Increases in the U.S.prison

What is the primary reason for recent increases in the U.S.prison population?

A) Sensationalized television reporting has increased fear of crime among the public.
B) States have built new prisons and must fill them to justify the expense.
C) The rate at which violent crimes occur has increased.
D) The federal government has become more involved in training and funding local law enforcement.
E) Policies aimed at stopping drug use and trafficking have led to a large number of arrests.