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
Which is predominant in normal healthyhuman ? 
Select and explain. 
A. LDH 1, B. LDH2, C. LDH 3, D. LDH4
B: LDH2
Answer: B: LDH2 
Explanation: Ans. is 'b' i.e., LDH2 IsoenzymeSubmit compositionIssuePercentage in serrumLDH IHHHHMyocardium, RBC30LDH2HHHMMyocardium, RBC35LDH3HHMMBrain, Kidney20LDH4HMMMSkeletal muscle, Liver10LDH 5MMMMSkeletal muscle, Liver5