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
True about the relation of epiploic foramen is - 
Select and explain. 
A. Portal vein posteriorly, B. IVC inferiorly, C. Hepatic artery superiorly, D. Bile duct anteriorly
D: Bile duct anteriorly
Answer: D: Bile duct anteriorly 
Explanation: Boundaries of the lesser sac are:-


Anterior:- Right free margin of lesser omentum (contains portal vein, hepatic artery proper and bile duct).
Posterior:- IVC, right suprarenal gland and T12 vertebra.
Superior:- a Caudate lobe of the liver.
Inferior:- 1st part of duodenum and horizontal part of the hepatic artery.