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
Which of the following RNA contains thymidine 
Select and explain. 
A. tRNA, B. Ribosomal RNA, C. Eukaryotic RNA, D. Prokaryotic RNA
A: tRNA
Answer: A: tRNA 
Explanation: Transfer RNA (tRNA) have modified bases.
Ribothymidine is a modified base of tRNA in which methyl group is added to uracil to form thymine.