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
The fold of Treves is - 
Select and explain. 
A. 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
B: the ilio-appendicular fold of peritoneum
Answer: B: the ilio-appendicular fold of peritoneum 
Explanation: Ans. is 'b' i.e., The ileo-appendicular fold of peritoneum.