A mutation occurs in the promoter of a protein-encoding gene.How might this mutation affect the production of the protein encoded by the gene?

A) The mRNA made from this gene would exhibit the same mutation and, therefore, would not fold or function properly.
B) The protein made from the promoter would have a different amino acid sequence and, therefore, would not function properly.
C) The promoter might not be recognized by RNA polymerase, so the enzyme would be unable to attach to the promoter and start transcription.
D) The start codon would be missing from the mRNA made from this gene, so the mRNA could not be translated.