What Was Ironic About the Second Half of the 20^th

What was ironic about the second half of the 20^th century in the U.S in regards to how substance use was viewed?

A) Chinese laborers used opium but were not punished for their use
B) Substances were banned across the U.S. but were allowed to be accessed by those who were wealthy
C) Prohibition was the reason the Temperance Movement began
D) A punitive stance was adopted for those who used substances, yet specific drugs were promoted and portrayed in a positive light