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': 'Brain injury patient in shock, emergency treatment: \nSelect and explain. \nA. Hypotensive resuscitation to prevent brain edema, B. Increase intracranial hemorrhage, C. Emergency craniotomy, D. Maintaining euvolemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]