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
[{'content': "Which of the following is true about upper 1/3' of the rectum? \nSelect and explain. \nA. It is covered by peritoneum only anteriorly, B. It is covered by peritoneum on the front, sides and back, C. It has no peritoneal attachments, D. It is covered by peritoneum on the sides and anteriorly", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is\'d\' i.e., It is covered by peritoneum on the sides and anteriorlylRef: Basic Human Anatomy, O\'Rahilly, Muller Chapter 36)Upper 1/3\'d of rectum Covered by peritoneum on the front and sidesMiddle 1/3"r of rectum Covered by peritoneum on the sides onlyLower 1/3"r of rectum Devoid of peritoneal aitachmerits', 'role': 'assistant'}]