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': 'The fracture of diaphysis involves which of the following bones? \nSelect and explain. \nA. Skull bones, B. Long bone, C. Sternum, D. Ribs', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The anatomic location of the fracture can be described as diaphyseal (involving the central shaft of a long bone), metaphyseal (involving the ends of the shaft of a long bone), physeal (involving the growth plate), or epiphyseal (involving the ends of a long bone).', 'role': 'assistant'}]