Beta Blockers USMLE Step 1 Practice Question

A 34-year-old woman with a history of major depressive disorder, currently maintained on sertraline 100 mg daily, presents to the emergency department several hours after developing a severe unilateral throbbing headache with photophobia and nausea. Unable to reach her physician, she took a medication from her friend's cabinet to treat what she believed was a migraine attack. On arrival, she is agitated and diaphoretic. Vital signs reveal a blood pressure of 148/92 mmHg, heart rate of 118 bpm, respiratory rate of 22 breaths per minute, and temperature of 39.4°C. Physical examination demonstrates bilateral hyperreflexia, inducible ankle clonus, and mydriasis. Which of the following medications most likely precipitated this syndrome?