Clozapine Is Referred to as an "Atypical" Antischizophrenic Drug Because

Clozapine is referred to as an "atypical" antischizophrenic drug because it

A) can reverse schizophrenic symptoms without producing the motor disorder tardive dyskinesia.
B) has little blocking action within the striatum.
C) is more potent at blocking D2 receptors than D4 receptors.
D) effectively treats schizophrenia, but also produces motor side effects.
E) was an accidental discovery.