A 65-year-old with persistent AF >48 hours is planned for elective cardioversion. He has no anticoagulation on board, normal TTE, and stable vitals. What is the best next step to minimize embolic risk?AProceed to cardioversion now without further testingBStart IV heparin only at the time of cardioversionCAnticoagulate for at least 3 weeks before cardioversionDBegin amiodarone and cardiovert in 24 hoursEStart clopidogrel 75 mg daily for 3 weeksCheck my answer