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': "Fracture involving both the malleoli is \nSelect and explain. \nA. Cotton's fracture, B. Potts's f racture, C. Pirogoff's fracture, D. Dupuytren's fracture", 'role': 'user'}, {'content': "Answer: B \nExplanation: B i.e. Pott's", 'role': 'assistant'}]