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': 'The commonest site of lymphoma in the gastrointestinal system is - \nSelect and explain. \nA. Small bowel, B. Stomach, C. Large intestine, D. Oesophagus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Stomach", 'role': 'assistant'}]