Which of the following is true of cocaine?
a. Crack cocaine may be the most effective reinforcer of all available drugs.
b. Cocaine produces the same physical and behavioral effects as heroin.
c. Cocaine abuse causes strong physical dependence.
d. Cocaine is the least addictive of the psychostimulant drugs.
e. Cocaine is a dopamine antagonist.
Answer: a. Crack cocaine may be the most effective reinforcer of all available drugs.
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