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': 'Open book and bucket handle injuries are seen in: \nSelect and explain. \nA. Spine, B. Pelvis, C. Femur, D. Humerus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Pelvis', 'role': 'assistant'}]