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
IOC for pericardial calcification 
Select and explain. 
A. CT scan, B. 2D-Echo, C. TEE, D. MRI
A: CT scan
Answer: A: CT scan 
Explanation: Pericardial calcification - CT scan.
Pericardial effusion - 2D echo.