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': 'Factors oring fat embolism in trauma patient: \nSelect and explain. \nA. Diabetes Mellitus, B. Mobility of joint, C. Resp. failure, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B ie Mobility of joint', 'role': 'assistant'}]