What introduces nucleotides in a template-independent manner to free 3' OH created upon cleavage of the interstrand hairpin?

What introduces nucleotides in a template-independent manner to free 3' OH created upon cleavage of the interstrand hairpin?













A. TdT
B. Artemis
C. RAG-1/2
D. XRCC4 with DNA ligase IV
E. Ku 70 and Ku 80














Answer: A