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
Bilateral spider leg appearance of kidney in IVP is seen in 
Select and explain. 
A. Hydronephrosis, B. Polycystic kidney, C. Medullary sponge kidney, D. Renal cell carcinoma
B: Polycystic kidney
Answer: B: Polycystic kidney 
Explanation: None