Which statement concerning the receptor subtypes involved in psychostimulant effects is true?
A) The locomotor-stimulating effects of cocaine involve the D5 receptor.
B) D2 receptors are required for cocaine self-administration.
C) Pimozide, a D2 receptor blocker, completely eliminates amphetamine-induced euphoria.
D) D1 receptor knockout mice are insensitive to both the locomotor stimulating and reinforcing effects of cocaine.
Correct Answer:
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