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
IVP of polycystic kidney disease shows – 
Select and explain. 
A. Cobra head, B. Dropping lily, C. Flower base appearance, D. Spider leg deformity
D: Spider leg deformity
Answer: D: Spider leg deformity 
Explanation: None