A 60-year-old man presents to the emergency department with haematemesis and melena. He is pale and clammy. BP is 92/60 mmHg and HR 118 bpm. He takes low-dose aspirin and occasional ibuprofen. What is the most appropriate initial management step?AResuscitate with intravenous crystalloids, establish large-bore IV access and arrange urgent endoscopyBGive oral PPI and discharge for outpatient endoscopyCStart warfarin to prevent portal vein thrombosisDInsert a nasogastric tube and delay resuscitationEGive intramuscular PPI and wait 24 hours before endoscopyCheck my answer