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: Medicine
[{'content': 'The GCS is determined by taking the best response in each category and totaling them; it ranges from \nSelect and explain. \nA. 15-Mar, B. 0-12, C. 18-May, D. 10-Jan', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]