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': 'Presence of calcification in an intracranial lesion is best made out by: \nSelect and explain. \nA. CT, B. MRI, C. Ultrasound, D. Contrast study', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. CT', 'role': 'assistant'}]