This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdominal wall ,Inguinal and Femoral region, Subject name: Anatomy
[{'content': 'A 45 year old male presents to OPD with acute abdominal pain. On examination it seems to have spread to retroperitoneal structure. Which of the following is most likely to get affected \nSelect and explain. \nA. Stomach, B. Transverse colon, C. Jejunum, D. Descending colon', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The descending colon is a retroperitoneal organ. The rest of the organs are surrounded by peritoneum. Other retroperitoneal organs are: - Pancreas, Duodenum, Ascending colon, Descending colon, Middle third of the rectum', 'role': 'assistant'}]