A 50-year-old male patient presents to the emergency department with acute onset of slurred speech, right arm weakness, and facial droop that started two hours ago. He has a history of hypertension and hyperlipidemia. Brain imaging has not shown any hemorrhage. What is the BEST initial treatment option for this patient given these clinical findings?
Immediate anticoagulation with intravenous heparin.
Intravenous thrombolytic therapy (e.g., tPA) if within the therapeutic window.
Immediate administration of an antiplatelet agent (e.g., aspirin).
Rapid lowering of blood pressure with intravenous antihypertensive agents.