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 most common neoplasm of kidney is \nSelect and explain. \nA. Wilm' s tumour, B. Renal cell carcinoma, C. Renal adenoma, D. Haemagioma", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]