This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
Relation of renal vein with aoa is 
Select and explain. 
A. Anterior, above SMA, B. Anterior, below SMA, C. Anterior, below IMA, D. Posterior, below SMA
B: Anterior, below SMA
Answer: B: Anterior, below SMA 
Explanation: Because the inferior vena cava is on the right half of the body, the left renal vein is generally the longer of the two.