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
[{'content': 'Troponin-T is preferable to CPK-in the diagnosis of acute myocardial infarction (MI) in all of the following situations except - \nSelect and explain. \nA. Bedside diagnosis of MI, B. Postoperatively (after CABG), C. Reinfarction after 4 days, D. Small infarcts', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]