Endonucleases and Exonucleases Are Enzymes That Can Remove Nucleotides

Endonucleases and exonucleases are enzymes that can remove nucleotides.An endonuclease _______ while an exonuclease ______________.

A) chews away at the 5' end of DNA;cuts DNA internally
B) chews away at a 3' end of DNA;cuts the 5' end of DNA
C) cuts DNA internally;chews away at the end of DNA
D) adds nucleotides internally to DNA;adds nucleotides on the 3' and 5' ends of DNA