A 55-year-old with acute pulmonary embolism has systolic BP 120 mmHg, troponin mildly elevated, and CT showing RV/LV ratio 1.2. Oxygen saturation is 93% on 2 L. What is the best initial management?AImmediate systemic thrombolysis with alteplaseBCatheter-directed thrombolysis immediatelyCPlace an inferior vena cava filter and no anticoagulationDObservation only with repeat imaging in 24 hoursEInitiate therapeutic anticoagulation without routine thrombolysisCheck my answer