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
[{'content': 'DNA synthesis requires: \nSelect and explain. \nA. DNA polymerase, B. DNA ligase, C. DNA topoisomerase, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. DNA polymerase, B i.e.DNA ligase, C i.e. DNA topoisomerase', 'role': 'assistant'}]