This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen, Pelvis and Perineum, Subject name: Anatomy
TRUE about the boundary of marked foramen (arrow): 
Select and explain. 
A. Hepatic aery posteriorly, B. Bile duct anteriorly, C. Poal vein laterally, D. Inferior vena cava inferiorly
B: Bile duct anteriorly
Answer: B: Bile duct anteriorly 
Explanation: Marked foramen - Epiploic foramen Boundaries: Anteriorly - hepatic triad structures including Bile duct anteriorly, within the free margin of lesser omentum Posteriorly - Inferior Vena Cava Above (superiorly) - caudate lobe of liver Below (inferiorly) - first pa of duodenum