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
Extradural hematoma CT scan finding is 
Select and explain. 
A. Hypodense biconvex lesion, B. Hyperdense biconvex lesion, C. Concavo convex hyperdense lesion, D. Low attenuated biconvex lesion
B: Hyperdense biconvex lesion
Answer: B: Hyperdense biconvex lesion 
Explanation: Ans. Hyperdense biconvex lesion