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: Medicine
All of the following are seen in cardiac tamponade except- 
Select and explain. 
A. Pulsus paradoxus, B. Diastolic collapse of right ventricle on echocardiogram, C. Electrical alterans, D. Kussumaul's Sign
D: Kussumaul's Sign
Answer: D: Kussumaul's Sign 
Explanation: None