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
Erythropoietin secreting tumor (s) - 
Select and explain. 
A. Cerebellar hemangioblastoma, B. Hepatoma, C. Renal cell Ca, D. All
D: All
Answer: D: All 
Explanation: Answer is 'a' i.e. Cerebeller hemangioblastoma; 'b' i.e. Hepatoma; 'c' i.e. Renal cell Ca