A 72-year-old man presents with acute-onset central chest pain radiating to the left arm, lasting 40 minutes. ECG shows ST-elevation in leads II, III, and aVF. What is the most appropriate immediate management step according to current guidelines?AAdminister sublingual GTN and reassess in 15 minutesBArrange urgent coronary angiography with PCICGive intravenous beta-blockersDBegin intravenous heparin infusionEObtain a chest X-ray before further interventionCheck my answer