The Length of a DNA Sequence Is ________ the Mature

The length of a DNA sequence is ________ the mature mRNA transcribed from it because ________.

A) shorter than; the mature mRNA does not contain exons
B) equal to; the mature mRNA was transcribed from the DNA sequence
C) longer than; the mature mRNA does not contain introns
D) shorter than; each codon of three bases encodes only one amino acid
E) longer than; each codon of one amino acid encodes three bases