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': "Richter's hernia can be seen in all hernia except \nSelect and explain. \nA. Femoral, B. Obturator, C. Epigastric, D. Para umbilical", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]