A 58-year-old man presents with melena and postural dizziness. Blood pressure is 96/60 mm Hg and heart rate 112/min. Hb is 78 g/L and urea is elevated. He is not taking anticoagulants. What is the most appropriate immediate management step?ADischarge with oral proton pump inhibitor and outpatient endoscopyBStart high-dose intravenous proton pump inhibitor after initial resuscitation and arrange urgent endoscopyCDelay proton pump inhibitor until endoscopy clarifies the diagnosisDGive only oral iron and arrange colonoscopyEAvoid blood products regardless of haemodynamic statusCheck my answer