The DSM-IV-TR Provides for a Diagnosis of Pain Disorder

The DSM-IV-TR provides for a diagnosis of pain disorder

A) regardless of whether the patient also suffers from some medical condition.
B) only if the patient also suffers from some medical condition.
C) only if the pain is considered psychogenic.
D) unless the patient also suffers from some medical condition.
E) only if the pain is considered iatrogenic.