This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Zollinger Ellison syndrome is characterized by \nSelect and explain. \nA. Fulminating ulcer in stomach and duodenum, B. Recurrent ulceration despite adequate therapy, C. Non-beta islet cell tumors of the pancreas, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Endocrine causes of duodenal ulcers can be Zollinger-Ellison syndrome, MEN syndrome, hyperparathyroidism.ZOLLINGER ELLISON SYNDROME is characterised by fulminant ulcer in stomach and duodenum and its recurrences in spite of adequate therapy .they are also characterised by non-beta cell islet tumours of pancreas Ref: SRB&;s manual of surgery,3 rd ed, pg no 774', 'role': 'assistant'}]