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': 'Lockwood repair is done in \nSelect and explain. \nA. Appendicitis, B. Femoral hernia, C. Deep vein thrombosis, D. Sigmoid volvulus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]