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
Least post translational modification occurs in 
Select and explain. 
A. t-RNA, B. Prokaryotic r- RNA, C. Eukaryotic r - RNA, D. Prokaryotic mRNA
D: Prokaryotic mRNA
Answer: D: Prokaryotic mRNA 
Explanation: D i.e. Prokaryotic mRNA