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': 'A myocardial infarct specimen is showing early granulation tissue. According to this change when has the infarct occurred? \nSelect and explain. \nA. Less than 1 hour, B. Within 24 hours, C. Within 1 week, D. Within 1 month', 'role': 'user'}, {'content': "Answer: C \nExplanation: Following a myocardial infarction, early formation of fibrovascular granulation tissue at margins occur in 7-10 days.Ref: Robbins Pathologic Basis of Disease, 6th Edition, Page 558; Essentials of Rubin's Pathology By Emanuel Rubin, 5th Edition, Pages 277-8", 'role': 'assistant'}]