BG has suffered with depression for years, which she describes as "coming on every year, once or twice, lasting a few months, and making me miserable. I don't want to live when I'm that low." Her medications are listed below. Which medications could be contributing to her depressive symptoms? (Select ALL that apply.)
A. Pegasys, for hepatitis C.
B .Sulfamethoxazole-trimethoprim, taken daily for UTI prophylaxis.
C. Oral contraceptives.
D. Varenicline, for smoking cessation.
E. Lisinopril-HCT, for hypertension.