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: Forensic Medicine
[{'content': 'CT of subdural hematoma will show: Odisha 09; NIMHANS 11; Bihar 12 \nSelect and explain. \nA. Biconvex hyperdense opacity, B. Biconcave hyperdense opacity, C. Concavoconvex opacity, D. Hyperdense diffuse lesion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Concavoconvex opacity', 'role': 'assistant'}]