This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CT SCAN, Subject name: Radiology
[{'content': 'A 64 yr old man with history of tril injury 3 weeks back, now comes to medicine opd with history headche & fluctuating weakness of Left side of his body.NCCT was done what is the possible diagnosis \nSelect and explain. \nA. Acute left subdural hematoma, B. Chronic Left Subdural hematoma, C. Left Subarachnoid hemorrhage, D. Right Epidural hematoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CT: Interpretation of an intracranial bleed * Acute bleed: Lesion is HYPERDENSE (white). * Chronic Bleed: Lesion is HYPODENSE (black). Figure 1: Acute subdural hematoma (lesion is hyperdense) Figure 2: Chronic subdural hematoma (lesion is hypodense)', 'role': 'assistant'}]