You see a 26-year-old college student diagnosed with major depressive disorder. He has been treated with a SSRI for the past 6 months with minimal clinical effect. You recommend as the next course of action:
A. Adding a benzodiazepine.
B. Adding a second-generation antipsychotic (SGA).
C. Switching to a SNRI.
D. Switching to a tricyclic antidepressant (TCA).
