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
The Tumor causing Polycythemia due to erythropoietin production is: 
Select and explain. 
A. Cerebellar hemangioma, B. Medulloblastoma, C. Ependymoma, D. Oligodendroglioma
A: Cerebellar hemangioma
Answer: A: Cerebellar hemangioma 
Explanation: Cerebellar hemangioma