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
Left ureter is related to -a) Quadratus lumborumb) Left gonadal vesselsc) Superior mesenteric veind) Sigmoid mesocolone) Internal iliac artery 
Select and explain. 
A. abc, B. bde, C. ace, D. bce
B: bde
Answer: B: bde 
Explanation: Left gonadal artery and sigmoid mesocolon are related to the anterior surface of the abdominal part of the left ureter.
Internal iliac artery is related to the posterior surface of pelvic part of the ureter.
Inferior mesenteric artery (not a superior mesenteric artery) is related to left ureter medially.