A 66-year-old man with AF (no mechanical valve, no mitral stenosis) asks when anticoagulation becomes a Class I recommendation. Estimated annual stroke risk is 2.2%. What does the guideline advise?AAnticoagulation not recommended below 3%/yrBAnticoagulation recommended at ≥2%/yr event riskCAnticoagulation only if CHA₂DS²-VASc ≥4 regardless of riskDAspirin plus clopidogrel preferred at 2%/yrEAnticoagulation only with documented left atrial thrombusCheck my answer