This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Molecular Genetics, Subject name: Biochemistry
[{'content': 'Deoxy ribonucleic acid is formed from: \nSelect and explain. \nA. Ribonuclease, B. Ribonucleotide monophosphate, C. Ribonucleotide diphosphate, D. Ribonucleotide triphosphate', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. C. Ribonucleotide diphosphate(Ref: Harper 31/e page 312)Reduction of the 2'-hydroxyl of purine and pyrimidine ribonucleotides, catalyzed by the ribonucleotide reductase complex, provides the deoxyribonucleoside diphosphates (dNDPs) needed for both the synthesis and repair of DNA", 'role': 'assistant'}]