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': 'CT in EDH shows ? \nSelect and explain. \nA. Hyperdense lesions, B. Crescent slaped, C. Concavo-convex, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a'i.e., Hyperdense lesionsAcute extradural (epidural) hematoma is biconvex hyperdense or mixed density lesion.", 'role': 'assistant'}]