A patient presents with acute chest/back pain and CT shows Stanford type B aortic dissection without rupture or malperfusion. Initial vitals: HR 110 bpm, SBP 170 mm Hg. Best immediate medical therapy?AInitiate IV beta-blocker (e.g., esmolol) to target HR 60-80 bpm, then add vasodilator to target SBP 100-120 mm HgBStart IV nitroprusside alone to rapidly reduce SBPCStart IV hydralazine alone to reduce afterloadDImmediate thoracic endovascular repairEGive IV labetalol bolus then observe without titrationCheck my answer