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: Pathology
[{'content': 'Which isoenzyme of LDH is seen in hea \nSelect and explain. \nA. LDH 1, B. LDH 2, C. LDH 3, D. LDH 4', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., LDH1", 'role': 'assistant'}]