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: Pathology
[{'content': 'All are benign mesenchymal tumours of stomach except - \nSelect and explain. \nA. Leiomyoma, B. Adenoma, C. Fibroma, D. Lipoma', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Adenoma", 'role': 'assistant'}]