A 68-year-old man with paroxysmal atrial fibrillation, hypertension, and type 2 diabetes (CHA₂DS₂-VASc=3) has normal valves and eGFR 50 mL/min/1.73 m². What is the most appropriate long-term strategy to reduce stroke risk?AStart a direct oral anticoagulant (e.g., apixaban) for stroke preventionBBegin low-dose aspirin dailyCStart warfarin because of diabetesDNo antithrombotic therapy is needed at this scoreEDual antiplatelet therapy without anticoagulationCheck my answer