This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
[{'content': 'Best Prognostic factor for head injury ? \nSelect and explain. \nA. Age of patient, B. Glasgow coma scale, C. Mode of injury, D. Presence of facial trauma', 'role': 'user'}, {'content': "Answer: B \nExplanation: Glassgow Coma Scale (GCS) Maximum score - 15, minimum score - 3 Best predictor of outcome : Motor response Patients scoring 3 or 4 have an 85% chance of dying or remaining vegetative, while scores above 11 indicate only a 5-10% likelihood of death Table given as image Ref : Harrison's 19th edition Pgno :1777", 'role': 'assistant'}]