Which of the following does not occur in prokaryotic gene expression,but does in eukaryotic gene expression?

A)mRNA, tRNA, and rRNA are transcribed.
B)RNA polymerase binds to the promoter.
C)A poly-A tail is added to the 3' end of an mRNA and a cap is added to the 5' end.
D)Transcription can begin as soon as translation has begun even a little.
E)RNA polymerase requires a primer to elongate the molecule.