This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Pathology
[{'content': "The flipped pattern of LDH isoenzymes occur in - \nSelect and explain. \nA. Myositis, B. Myocardial infarction, C. Grave's disease, D. Myasthenia gravis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: LDH-2 is usually the predominant form in the serum. An LDH-1 level higher than the LDH-2 level (a "flipped pattern") suggests myocardial infarction (damage to hea tissues releases hea LDH, which is rich in LDH-1, into the bloodstream). The use of this phenomenon to diagnose infarction has been largely superseded by the use of Troponin I or T measurement Ref: https://en.wikipedia.org/wiki/Lactate_dehydrogenase', 'role': 'assistant'}]