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': 'Which is the most abundant RNA molecule \nSelect and explain. \nA. r RNA, B. t RNA, C. m RNA, D. mi RNA', 'role': 'user'}, {'content': 'Answer: A \nExplanation: r RNA (80%)\nt RNA (15%)\nm RNA (5%)\nmi RNA (<1%)', 'role': 'assistant'}]