WILL GIVE 20 POINTS Different types of mutations can occur in DNA. If a strand of DNA GACTAGCAC becomes GACTAAGCAC what type of mutation has occurred?

A. a silent mutation results in the insertion of a different amino acid.

B. a substitution occurs with the adenine bases.

C. a deletion of a cytosine base occurs.

D. a base is inserted into one strand of the DNA.