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: Medicine
Wilm's tumor occurs in: 
Select and explain. 
A. Stomach, B. Bronchus, C. Liver, D. Kidney
D: Kidney
Answer: D: Kidney 
Explanation: Wilms tumor is nephroblastoma of kidney that occurs in children.
Renin-secreting tumors are clear examples of renin-dependent hypertension. In the kidney, these tumors include benign hemangiopericytomas of the juxtaglomerular apparatus and, infrequently, renal carcinomas, including Wilms’ tumors. Renin-producing carcinomas also have been described in lung, liver, pancreas, colon, and adrenals. Renovascular hypertension is another renin-mediated form of hypertension. Obstruction of the renal artery leads to decreased renal perfusion pressure, thereby stimulating renin secretion. Over time, possibly as a consequence of secondary renal damage, this form of hypertension may become less renin-dependent.
Reference: : Davidson P R I N C I P L E S   and Practice O F M E D I C I N E 23rd edition page no  1893