Following splicing, the conserved adenosine nucleotide within the intron displays an unusual array of bonds, including:
A) phosphate attached to the 4-carbon of the adenine nitrogenous base.
B) phosphodiester bonds attached at 3 places on the ribose (2', 3', 5').
C) additional methyl (-CH3) groups added to the adenine.
D) a DNA strand attached to the spliced RNA.
E) attachment to an arginine amino acid.