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': 'Cardiac enzymes are \nSelect and explain. \nA. CPK, B. LDH, C. SGOT, D. ALK. Phosphatase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: These tests can measure blood levels of the enzyme creatine phosphokinase (CPK), also called creatine kinase (CK), and a more specific form of this enzyme called CK-MB. Additionally, cardiac enzyme tests can be used to check the blood levels of the proteins myoglobin and troponin.', 'role': 'assistant'}]