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': 'Frameshift mutation does not effect complete amino acid sequence if it occurs in multiple of \nSelect and explain. \nA. 1, B. 2, C. 3, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Question repeated', 'role': 'assistant'}]