This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
[{'content': 'Serum enzyme used for MI \nSelect and explain. \nA. CK, B. Alkaline phophatase, C. Acid phosphatase, D. Lipase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The enzymes routinely measured in the clinical laboratory for the purpose of diagnosing and monitoring myocardial infarction include creatine kinase (CK), aspaate aminotransferase (sGOT or AST), and lactate dehydrogenase (LDH).', 'role': 'assistant'}]