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: Medicine
Fibrous scar in myocardial infection in well established by - 
Select and explain. 
A. 6 weeks, B. 6 months, C. 6 days, D. 30 days
A: 6 weeks
Answer: A: 6 weeks 
Explanation: None