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 scan of a patient with history of head injury shows a biconvex hyperdense lesion displacing the grey-white matter interface. The most likely diagnosis is: \nSelect and explain. \nA. Subdural hematoma, B. Diffuse axonal injury, C. Extradural hematoma, D. Hemorrhagic contusion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Extradural Hematoma', 'role': 'assistant'}]