Which mutation would change the greatest number of amino acids in a protein?
A. The deletion of a single adenine nucleotide in the middle of a gene.
B. The addition of the nucleotides that make up an additional stop codon to the end of a gene.
C. The substitution of a thymine nucleotide with a cytosine nucleotide near the beginning of a gene.
D. The insertion of a thymine, a guanine, and an adenine nucleotide in that order at the end of a gene.