A) 3'

5' exonuclease activity.
B) They consist of a single polypeptide chain.
C) 5'11ed123a_61b5_54ab_923d_9f4380d69b9d_TB5884_003' polymerase activity.
D) They require a free 3'-OH end on a pre-existing primer.
E) Prokaryotic and eukaryotic DNA polymerases share all of these characteristics.