Which of the following might best describe the author’s arguments in the passage（）

A．to make ail drugs extremely costly
B．to put honest warnings on all drug labels
C．to make the buying and selling of ail drugs illegal
D．to tell people the dangerous effects of drugs on health

A．Few people will take drugs ff they are allowed
B．The United Stated will be easily defeated if its citizens are allowed to take drugs
C．It is a general practice to forbid drugs in different countries
D．A majority of people will become addict to drugs if they are allowed to take them