A 56-year-old man presents with large-volume haematemesis and melaena. He is pale and clammy. Blood pressure is 80/50 mmHg, pulse 120 beats/min and capillary refill time is 5 seconds. What is the most appropriate initial management step?AAirway and breathing assessment with high-flow oxygen and large-bore intravenous fluid resuscitationBUrgent endoscopy without resuscitationCImmediate start of oral Omeprazole and dischargeDArrange outpatient endoscopy within 2 weeksEPrescribe oral Iron and review in 1 weekCheck my answer