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
Viscera forms wall of which henna 
Select and explain. 
A. Lumbar hernia, B. Sliding hernia, C. Epigastric hernia, D. Femoral hernia
B: Sliding hernia
Answer: B: Sliding hernia 
Explanation: Ans. is 'b' i.e. sliding hernia