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: Radiology
[{'content': 'Earliest sign of increased intracranial tension is \nSelect and explain. \nA. Silver beaten appearance, B. Erosion of dorsum sella, C. Suture diastasis, D. J shaped sella', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Adults - Erosion of dorsum sella.\nChildren - Suture diastasis.', 'role': 'assistant'}]