In 1908, the Opium Act Made It Illegal to Import

In 1908, the Opium Act made it illegal to import, manufacture, sell or possess opium for nonmedical purposes. What prompted this action to be taken?

A) The smoking of opium would lead to high rates of lung cancer.
B) Opium use would outstrip the use of alcohol.
C) Smoking opium would corrupt the youth of the nation.
D) An increasing number of white people were smoking opium.