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 type of RNA has the splicing activity as a function? 
Select and explain. 
A. mRNA, B. snRNA, C. tRNA, D. rRNA
B: snRNA
Answer: B: snRNA 
Explanation: Small Nuclear RNAs (snRNAs), a subset of the small RNAs, are significantly involved in rRNA and mRNA processing and gene regulation. Of the several snRNAs, U1, U2, U4, U5, and U6 are involved in intron removal and the processing of mRNA precursors into mRNA Ref: Weil P. (2011). Chapter 34. Nucleic Acid Structure & Function. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell (Eds), Harper's Illustrated Biochemistry, 29e.