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 cardiac tamponede 
Select and explain. 
A. 2D - Echo, B. USG, C. CT, D. MRI
A: 2D - Echo
Answer: A: 2D - Echo 
Explanation: IOC for cardiac tamponade - 2D Echo.
IOC for cardiomyopathy  - 2D Echo.