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: Biochemistry
[{'content': 'Damage to RBC resulting in their lysis, increases which isoenzyme in blood? \nSelect and explain. \nA. LDH-1, B. LDH-3, C. LDH-4, D. LDH-5', 'role': 'user'}, {'content': 'Answer: A \nExplanation: LDH 1 is pre-dominantly present in RBCs and smooth muscle of heart, thus when RBCs are damaged, LDH1 is raised.', 'role': 'assistant'}]