This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
[{'content': 'Diagnostic Troponin I value for MyoCardial infarction is? \nSelect and explain. \nA. >O.2ng\\/mL, B. >O.4ng\\/ml, C. >O.6 ng\\/mL, D. >O.8ng\\/mL', 'role': 'user'}, {'content': 'Answer: A \nExplanation: TnI and TnT normally are not found in the circulation however after acute MI, both are dectectable within 2-4 hr with levels peaking at 48hrs and remaining elevated for 7 to 10 days Robbins 9 th edition page no. 383', 'role': 'assistant'}]