This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small intestine, Subject name: Surgery
[{'content': 'Most common tumor of small bowel in children: \nSelect and explain. \nA. Lymphoma, B. Carcinoma, C. Leiomyosarcoma, D. Adenocarcinoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: SMALL - BOWEL NEOPLASM MC tumor of small bowel : Stromal tumor> Adenoma MC tumor of small bowel in children: Lymphoma MC malignant tumor of small bowel: Adenocarcinoma >Carcinoid MC site of small bowel malignancy, carcinoids, lymphoma: Ileum', 'role': 'assistant'}]