This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney and ureter, Subject name: Surgery
Reflux of urine into the pelvis and calyces with mild dilatation with minimal blunting of fornices indicates which grade of VUR ? 
Select and explain. 
A. Grade II, B. Grade III, C. Grade IV, D. Grade I
B: Grade III
Answer: B: Grade III 
Explanation: Grade I Grade II Grade III Grade IV Grade V