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': 'A codon consists of: \nSelect and explain. \nA. One molecule of aminoacyl-tRNA, B. Two complementary base pairs, C. Three consecutive nucleotide units, D. Four individual nucleotides', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. Three consecutive nucleotide units(Ref: Harper 31/e page 399)Each codon consists of a sequence of three nucleotides, i.e. it is a triplet code.', 'role': 'assistant'}]