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
Which isoenzyme of LDH is seen in hea 
Select and explain. 
A. LDH 1, B. LDH 2, C. LDH 3, D. LDH 4
A: LDH 1
Answer: A: LDH 1 
Explanation: Ans. is 'a' i.e., LDH1