A 69-year-old man with suspected stroke arrives 5 hours after last known well. CT shows no bleed; perfusion imaging reveals a salvageable penumbra with proximal MCA occlusion. What evidence-based therapy is indicated?AEndovascular thrombectomy up to 24 hours in selected patientsBIV alteplase at 5 hours after onset regardless of criteriaCNo reperfusion options beyond 4.5 hoursDHeparin infusion to lyse the clotEImmediate carotid endarterectomyCheck my answer