Which of the following describes a silent mutation?
A.Base pair change results in a premature stop codon; protein is nonfunctional.

B.Base pair change results in a different amino acid; this may or may not affect the protein that result.

C.Base is changed but the resulting amino acid is the same as in the non mutant DNA. No outward changes.

D.A base is either added or deleted and causes the codons to be read incorrectly.