In Well-Designed Research Studies, Medications That Enhance Serotonin Functioning Have

In well-designed research studies, medications that enhance serotonin functioning have been found to help patients recover from episodes of depression. Given the realities of the patient uniformity myth, it would be a mistake to conclude that

A) most depressed patients will be helped substantially by these medications.
B) all depressed patients will be helped by these medications.
C) research can help us determine which treatments should be used for specific disorders.
D) medication can be an appropriate treatment for a psychological disorder.