One difference between prokaryotes and eukaryotes is:
a) eukaryotic mRNAs have a polyA tail whereas prokaryotic mRNAs do not.
b) the genes for eukaryotic mRNAs have a promoter, whereas prokaryotic ones do not.
c) eukaryotic mRNAs are made by the process of translation from DNA, whereas prokaryotes transcribe their RNA.
d) both eukaryotes and prokaryotes produce a pre-mRNA to help splice out the introns in the gene.
e) None of the above is a correct difference between prokaryotes and eukaryotes.