This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': "True about Richter's hernia \nSelect and explain. \nA. Meckles diveiculum is content, B. Only pa of bowel wall enters hernia, C. Appendix is the content, D. Viscus forms the wall of the hernia", 'role': 'user'}, {'content': "Answer: B \nExplanation: In Richter's hernia, only pa of the bowel wall enters the hernia. Bowel obstruction may not be present but the bowel wall may still become necrotic and perforate.In sliding hernia, viscus forms the wall of the herniaIn Littre's hernia, Meckel's diveiculum is the content.In Amyand's hernia, appendix is the content.Ref: Bailey and love 27e pg: 1024", 'role': 'assistant'}]