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': 'For polymerase chain reaction which of the following is not required \nSelect and explain. \nA. TAQ polymerase, B. d-NTP, C. Dideoxynucleotides, D. Magnesium', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]