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': 'First and most prominent radiological sign of raised intra cranial tension in infants and children on plain x- ray \nSelect and explain. \nA. Copper beaten appearance, B. Suture diastasis, C. Erosion of dorsum sellae, D. J shaped sella', 'role': 'user'}, {'content': 'Answer: B \nExplanation: First & most prominent in infant and children - Suture diastasis.\nCardinal sign of raised ICT\xa0in adults - Erosion of dorsum sellae.', 'role': 'assistant'}]