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': 'What is not found in head injury: March 2007 \nSelect and explain. \nA. Confusion, B. Loss of consciousness, C. Lucid interval, D. GCS score of O', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: GCS score of O', 'role': 'assistant'}]