Which of the Following Is True Regarding Drugs of Abuse

Multiple Choice

Which of the following is true regarding drugs of abuse?

A) The speed at which the compound begins to take effect varies as a result of the drug-specific site of action.
B) The heart and cardiovascular system are of minimal importance to the process of biotransformation.
C) The site of action is the central nervous system.
D) Rectal administration is quite common, although it is relatively inefficient.