This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute coronary syndrome, Subject name: Medicine
[{'content': 'Which of the following is called "flipping effect"? \nSelect and explain. \nA. LDH 1 >LDH 2, B. LDH 2 > LDH 1, C. LDH 2 > LDH 3, D. LDH 3 > LDH 2', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Option A = LDH 1>LDH 2 In Normal person, LDH2>LDH1 LDH 1 is present in cardiac Myocyte. If MI occurs, LDH1 levels | Lactate dehydrogenase (LDH): Tetrameric enzyme formed by combination of 2 subunits: H (Hea) and M (Muscle): Type Subunit Tissues of origin LDH-1 H4 Hea muscle LDH-2 H3M1 RBCs LDH-3 H2M2 lungs LDH-4 H1M3 Liver LDH5 M4 Muscles', 'role': 'assistant'}]