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
Polycythemia is not caused by ? 
Select and explain. 
A. Renal carcinoma, B. Liver carcinoma, C. Cerebellar hemangioma, D. Lung carcinoma
D: Lung carcinoma
Answer: D: Lung carcinoma 
Explanation: Ans. is 'd' i.e., Lung carcinoma Impoant tumors causing polycythemia are renal cell carcinoma, hepatocellular carcinoma (liver carcinoma) and cerebellar hemangioma.