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': 'Which of the following graft resembles TMJ morphologically, structurally, functionally, histologically: \nSelect and explain. \nA. Costocondral graft., B. Calvarial graft., C. Sternoclavicular graft., D. Metatarsal graft.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]