This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Raised ICP and Brain death, Subject name: Medicine
[{'content': 'Which is not a sign of raised ICP? \nSelect and explain. \nA. Blurring of disc margins, B. Positive Kernig Sign, C. Ipsilateral pupil dilatation, D. Ipsilateral hemiplegia', 'role': 'user'}, {'content': "Answer: B \nExplanation: Positive Kernig sign is a feature of meningeal irritation and not raised ICP. Ipsilateral hemiplegia occurs due to Kernohan Woltman sign seen in uncal herniation. Ipsilateral pupil dilatation: The pupil of the same side of CNS bleed dilates and shows a sluggish reaction to light. It is seen in uncal herniation and is called Hutchinson's pupil. Blurring of disc margins is an early finding in papilledema", 'role': 'assistant'}]