This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Wound Healing, Subject name: Pathology
A 74-year-old woman presents with acute chest pain and shoness of breath. Cardiac catheterization demonstrates occlusion of the left anterior descending coronary aery. Laboratory studies and ECG are consistent with acute myocardial infarction. Which of the following is the most likely pathological finding in the affected hea muscle 4 weeks later? 
Select and explain. 
A. Capillary-rich granulation tissue, B. Collagen-rich scar tissue, C. Granulomatous inflammation, D. Neutrophils and necrotic debris
B: Collagen-rich scar tissue
Answer: B: Collagen-rich scar tissue 
Explanation: Pathologic findings in congestive hea failure include:- Change Time Microscopic signs of coagulative necrosis 24 hours after the onset of vascular occlusion PMNL and marophages 3-5 days from the time of injury Capillary rich granulation tissue 7 days or end of first week Collagen rich scar tisssue(necrotic myocardium is replaced) weeks-months Diagnosis: Myocardial infarction