The correct answer is D. Metoprolol.
Several drugs have been incriminated as inducers of psoriasis, in particular and most notably lithium, beta-blockers, antimalarials, and interferon. More recent additions include terbinafine, calcium channel blockers, captopril, glyburide, and lipid-lowering drugs such as gemfibrozil. The other medications are less likely to exacerbate psoriasis than a beta blocker.