Eukaryotic Genes Coding for Proteins Usually Have Introns

Multiple Choice

Eukaryotic genes coding for proteins usually have introns. The production of recombinant eukaryotic proteins (insulin, for example) in bacteria does not necessarily pose a problem because

A) bacteria possess the necessary enzymes to correctly process the primary transcript containing intron sequences.
B) a cDNA copy of the mRNA can be cloned and expressed.
C) the protein synthetic machinery of the bacteria will only translate the exon portions of the resulting RNA.
D) the translation of intron regions will not alter the activity of the protein if they are removed by proteolytic processing.