Research on the Effectiveness of Antidepressant Drugs Indicates That ________

Research on the effectiveness of antidepressant drugs indicates that ________.

A) tricyclics are more effective than MAO inhibitors or selective serotonin reuptake inhibitors
B) MAO inhibitors are more effective than tricyclics or selective serotonin reuptake inhibitors
C) selective serotonin reuptake inhibitors are more effective than tricyclics or MAO inhibitors
D) all three classes of antidepressants are similar in effectiveness