All of the Following Evidence Supports the Idea That Traditional

All of the following evidence supports the idea that traditional antipsychotic medications act on the dopamine system except

A) there is a decrease in dopamine-induced prolactin release from the pituitary gland during treatment with antipsychotic drugs.
B) there is a positive correlation between the potency of an antipsychotic drug and its ability to displace a labeled ligand from dopamine receptors.
C) antipsychotic drugs cause parkinsonian side effects, which are known to involve dopamine.
D) antipsychotics that have lower affinity for DA receptors require higher doses to be clinically effective.