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 may cause ST segment elevation on EKG except - 
Select and explain. 
A. Early repolarization variant, B. Constrictive pericarditis, C. Ventricular aneurysm, D. Prizmetal angina
B: Constrictive pericarditis
Answer: B: Constrictive pericarditis 
Explanation: None