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': 'All of the following factors evaluate the chances of amputation in a limb, except \nSelect and explain. \nA. Age, B. B.P, C. Velocity of trauma, D. Presence of infection', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Presence of infection Mangled Extremity Severity Score (MESS) can be used as predictor of eventual amputation versus limb salvageQ. Higher the score lower the chances of salvage i.e. higher score has higher chances of amputation. However recent studies have shown it to be inaccurate in predicting the functional outcome for mangled limb patient* Factors in evaluation of MESS are : Mn- " Shocked SIA"', 'role': 'assistant'}]