This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'Eukaryotic DNA polymerase involved in proofreading and DNA repair during replication is \nSelect and explain. \nA. a, B. b, C. E, D. d', 'role': 'user'}, {'content': "Answer: C \nExplanation: In bacteria, all three DNA polymerases (I, II and III) have the ability to proofread, using 3' - 5' exonuclease activity. ... In eukaryotesonly the polymerases that deal with the elongation (delta and epsilon) have proofreading ability (3' - 5' exonuclease activity) Ref satyanarayana 4e", 'role': 'assistant'}]