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': 'Right kidneys anterior relation: all are devoid of peritoneum, except \nSelect and explain. \nA. Duodenum, B. Supra renal gland, C. Colon, D. Liver', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Question simply is: Which is not a retroperitoneal structure - LiverRight kidney anterior relation are:Anteriorly the right kidney is related to the Liver, duodenum and hepatic flexure of ascending colonAnteriorly the left kidney is related to Stomach, Jejunum, Pancreas, Spleen and descending ColonAdrenal gland is superior and anterior to the Kidneys', 'role': 'assistant'}]