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': 'Modified base is seen in - \nSelect and explain. \nA. tRNA, B. rRNA, C. hnRNA, D. mRNA', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., tRNA", 'role': 'assistant'}]