This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney & Ureturs, Subject name: Surgery
Following is true about Wilm's tumor, except: 
Select and explain. 
A. May present with an abdominal lump, B. It is most common renal neoplasm in children, C. It is always unilateral, D. Responds well to chemotherapy
C: It is always unilateral
Answer: C: It is always unilateral 
Explanation: Ans. (c) It is always unilateralRef: Campbell Urology 11th Edition, Page 3568* Wilm's Tumor presents with both unilateral and bilateral tumor.