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 score evaluates chances of amputation in a traumatized limb: \nSelect and explain. \nA. Revised trauma score, B. Injury severity score, C. Abbreted injury score, D. MES score', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. MES score. Mangled Extremity Severity Score (MESS) used to predict necessity of amputation after lower extremity trauma Variables skeletal and soft tissue injury (graded 1-4) limb ischemia (graded 1-3) shock (graded 0-2) age (graded 0-2) Calculation score determined by adding scores of components in four categories Interpretation score of 7 or more is highly predictive of amputation', 'role': 'assistant'}]