This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Radiology
For pericardial calcifications, which is the best investigation - 
Select and explain. 
A. MRI, B. Transesophageal echocardiography, C. USG, D. CT scan
D: CT scan
Answer: D: CT scan 
Explanation: CT is the most accurate method of demonstrating the extent and distribution of pericardial calcification. Ref : Suttons Radiology