Since the 1960s in the United States,public Policies and High

Since the 1960s in the United States,public policies and high taxes on cigarettes to discourage smoking have

A) increased,and the number of adult smokers has been cut in half.
B) increased,but the number of adult smokers has stayed about the same.
C) increased,but the number of adult smokers has increased by about 50%.
D) decreased,and the number of adult smokers has dropped by about 20%.