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
Investigation of choice for marking out calcification of an intracranial lesion is: September 2010 
Select and explain. 
A. CT Scan, B. MRI scan, C. USG, D. Contrast studies
A: CT Scan
Answer: A: CT Scan 
Explanation: Ans. A: CT Scan