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: Surgery
[{'content': 'The fold of Treves is - \nSelect and explain. \nA. The fold of mucous membrane projecting into the lumen of the rectum, B. the ilio-appendicular fold of peritoneum, C. The fold of mucous membrane around the papilla of Vater, D. The fold of peritoneum over the inferior mesenteric vein', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., The ileo-appendicular fold of peritoneum.", 'role': 'assistant'}]