Which of the following is true about capping of RNA following its synthesis: (A) Occurs at 3' end of RNA, (B) Occurs in nucleus of cell, (C) Specific to MRNA of Prokaryotes, (D) S-adenosyl methionine (SAM) acts as methyl donor
Answer is D. 7 - Methylguanosine attached to 5' end of RNA is called capping of RNA.
Refer byte "Post transcriptional modification".