Evidence That the Nucleus Accumbens Is Involved in Drug Addiction

Evidence that the nucleus accumbens is involved in drug addiction comes from reports that

A) animals will self-administer microinjections of addictive drugs directly into the nucleus accumbens.
B) microinjection of addictive drugs into the nucleus accumbens can lead to the development of conditioned place preferences..
C) lesions to the nucleus accumbens reduce the rewarding effects of systemic drugs.
D) all of the above
E) both A and C