This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Traumatic Brain Injury, Subject name: Surgery
[{'content': "The earliest manifestation of increased intracranial pressure following head injury is - \nSelect and explain. \nA. Ipsilateral pupillary' dilatation, B. Contralateral pupillary dilation, C. Altered mental status, D. Hemiparesis", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Altered mental status o Early signs of elevated ICP include drowsiness and a diminished level of consciousness.o Coma and unilateral pupillary changes are late signs and require immediate intervention. - Harrison", 'role': 'assistant'}]