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': 'About ZES true is ?a) MC site is duodenal loopb) It is an exocrine diseasec) It is an endocrine diseased) 50% are malignante) Surgical excision is done \nSelect and explain. \nA. acde, B. bde, C. abcd, D. abde', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]