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: Radiology
Spider leg appearance is found in – 
Select and explain. 
A. Polycystic kidney, B. Pyelonephritis, C. Hydronephrosis, D. Renal artery stenosis
A: Polycystic kidney
Answer: A: Polycystic kidney 
Explanation: Spider leg appearance on IVP is seen in Polycystic kidney disease.