A 52-year-old man with a history of chronic alcohol use presents with haematemesis and melaena. He is haemodynamically unstable with BP 80/50 mmHg and HR 120 bpm. What is the most appropriate immediate management priority?AUrgent upper GI endoscopy before resuscitationBRapid intravenous fluid resuscitation and blood products as neededCStart high-dose oral proton pump inhibitorDArrange transfer for elective endoscopy the next dayEGive oral tranexamic acid and observeCheck my answer