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
[{'content': 'Boundaries of foramen of Winslow are all except \nSelect and explain. \nA. Caudate lobe of liver, B. Inferior vena cava, C. Free border of lesser omentum, D. 4th pa of duodenum', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Epiploic foramen, also called the foramen of Winslow, is a passage between the greater (general peritoneal space) and lesser sac (omental bursa) allowing communication between these two spaces. Ref - BDC 6e vol2 240', 'role': 'assistant'}]