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': 'Erythropoietin secreting tumor (s) - \nSelect and explain. \nA. Cerebellar hemangioblastoma, B. Hepatoma, C. Renal cell Ca, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is 'a' i.e. Cerebeller hemangioblastoma; 'b' i.e. Hepatoma; 'c' i.e. Renal cell Ca", 'role': 'assistant'}]