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': 'When do neutrophils appears in myocardial infarction? \nSelect and explain. \nA. Less than 4 hours, B. 4-12 hours, C. 12-24 hours, D. 1-3 days', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. 12-24 hours12-24 hr- Dark motting- In light microscopy, ongoing coagulative necrosis, marginal contraction band necrosis, beginning if neutrophilic infiltration.', 'role': 'assistant'}]