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: Anatomy
Which of the following is the most common renal vascular anomaly - 
Select and explain. 
A. Supernumerary renal arteries, B. Supernumerary renal veins, C. Double renal arterires, D. Double renal veins
A: Supernumerary renal arteries
Answer: A: Supernumerary renal arteries 
Explanation: None