This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pathology
Most sensitive and specific marker for MI is? 
Select and explain. 
A. Troponin, B. Cytokeratin, C. Myoglobin, D. CPK-MM
A: Troponin
Answer: A: Troponin 
Explanation: Ref: Harrison 20th edition, P 384Cardiac specific markers of myocardial damage include quantitative determination of CK-MB, Troponin I and Troponin T. Troponins can become elevated by 3 hours. The circulating values remain elevated up to a week.