This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'The use of 5% dextrose as an intravenous resuscitation fluid can \nSelect and explain. \nA. Improve cerebral perfusion, B. Provide glucose substrate for cerebral metabolism, C. Reduce intracranial pressure and cause lacity of brain, D. Reduce serum osmalality and cause brain edema', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 5% dextrose is a free water solution. Dextrose gets metabolised and plasma osmolality is decreased. This increases the brain oedema in head injury and hence should be avoided.', 'role': 'assistant'}]