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
[{'content': "True about Dressler'syndrome is all, except - \nSelect and explain. \nA. 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", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]