This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Artery to bleed in duodenal ulcer haemorrhage - \nSelect and explain. \nA. Splenic artery, B. Gastroduodenal artery, C. Left gastric artery, D. Sup. mesenteric artery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Gastro duodenal artery is the most common artery involved in duodenal ulcer hemorrhage.\n\nAlso, remember\n\nA peptic ulcer is the most common cause of massive upper gastrointestinal bleed (Duodenal ulcers > Gastric ulcers)\nBleeding ulcers in the duodenum are usually located on the posterior surface of the duodenal bulb.', 'role': 'assistant'}]