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': 'Meningioma on plain radiography reveals – a) Calcificationb) Erosionc) Sutural diastasis d) Osteosclerosise) Vascular marknig \nSelect and explain. \nA. ade, B. bde, C. abd, D. ad', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]