علم الأدوية .. Pharmacology

A 64 year-old-age male with history of hypertension and hyperlipidemia comes to the emergency department with chest pain. This chest pain is going to his neck and his arm for the last one hour. He is sweating. He’s short of breath. He’s got S4 gallop. ECG shows that ST segment elevation in V2-V4. What is the best next step in management ?

a. Oxygen.
b. Aspirin.
c. Beta-blockers.
d. Heparin.
e. Thrombolytic therapy.