A 57-year-old man is brought to the ED in ventricular fibrillation cardiac arrest. Bystander CPR was initiated; time from collapse to ED arrival is 8 minutes. According to current ACLS-based guidance, what is the next immediate action?AIntubate the patient before any other interventionBAdminister IV adrenaline immediatelyCDeliver an unsynchronised defibrillation shock as soon as possible and resume CPRDObtain a 12-lead ECG before defibrillationEAdminister atropine 1 mg IVCheck my answer