This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Transcription, Subject name: Biochemistry
Find the false statement about mi-RNAs: 
Select and explain. 
A. Inhibit gene expression, B. Can encode proteins, C. Gene silencing RNAs, D. 21-30 nucleotides in length
B: Can encode proteins
Answer: B: Can encode proteins 
Explanation: mi-RNAs : small non coding RNA They are 21-30 nucleotides in length. They don't code for any protein. These are transcribed but not translated. Function :gene silencing.