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: Pathology
True about Dressler'syndrome is all, except - 
Select and explain. 
A. Occurs within hours after myocardial infarction, B. May be due to early use of anticoagulant, C. Chest pain is common, D. Responds well to salicylates
A: Occurs within hours after myocardial infarction
Answer: A: Occurs within hours after myocardial infarction 
Explanation: None