A 62-year-old man presents with melaena and postural dizziness. He is hypotensive at 90/60 mmHg and tachycardic. He is pale and clammy. What is the most appropriate immediate management step?AAdminister intravenous proton pump inhibitor prior to any other interventionBArrange urgent colonoscopyCCommence oral iron supplementationDEstablish two large-bore intravenous lines and commence fluid resuscitation with crystalloidsESend the patient directly to endoscopy suite without resuscitationCheck my answer