A 58-year-old with atrial fibrillation for 5 days is hemodynamically stable and wants cardioversion. He has not been anticoagulated. What is the best next step?AProceed with electrical cardioversion now without imaging or anticoagulationBStart intravenous heparin and cardiovert immediately, then stop anticoagulation the same dayCAnticoagulate for at least 3 weeks before cardioversion or perform TEE-guided cardioversion with periprocedural anticoagulationDGive aspirin 325 mg daily for 1 week then cardiovertEDelay cardioversion for 6 monthsCheck my answer