A 62-year-old man presents with melena and dizziness. Blood pressure is 90/55 mmHg and heart rate 110 beats/min. He appears pale and clammy. Which of the following is the most appropriate immediate management step?AArrange urgent outpatient gastroscopy without resuscitationBInsert two large-bore intravenous cannulas and commence intravenous crystalloid resuscitationCGive oral omeprazole and dischargeDStart warfarin for presumed portal vein thrombosisEInsert a nasogastric tube onlyCheck my answer