A 68-year-old man with paroxysmal atrial fibrillation, hypertension, and type 2 diabetes has a CHA₂DS₂-VASc score of 3. He has normal renal function and no history of major bleeding. What is the most appropriate next step for stroke prevention?AInitiate a direct oral anticoagulant (DOAC)BStart aspirin 81 mg dailyCNo antithrombotic therapy neededDBegin dual antiplatelet therapy (aspirin + clopidogrel)EWarfarin only if TTR can be maintained >70%Check my answer