A 59-year-old man presents with symptomatic atrial fibrillation of 72 hours' duration. He is haemodynamically stable. No prior anticoagulation. What is the appropriate strategy regarding cardioversion?AImmediate electrical cardioversion with no anticoagulationBElective cardioversion after at least 3 weeks of therapeutic anticoagulation or TEE-guided strategy with peri-procedural anticoagulationCDelay cardioversion for 6 weeks regardless of anticoagulationDStart aspirin 325 mg daily and cardiovert tomorrowECardiovert now and begin low-dose heparin afterwardsCheck my answer