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': 'Fidelity of protein translation depends on: \nSelect and explain. \nA. RNA polymerase, B. DNA polymerase, C. MRNA polymerase, D. Amino acyl t-RNA synthetase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Amino acyl t-RNA synthetase', 'role': 'assistant'}]