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 DNA polymerase is/are involved in repair of mammalian DNA 
Select and explain. 
A. α, B. β, C. γ, D. ε
B: β
Answer: B: β 
Explanation: DNA β is involved in DNA repair in eukaryotes.