The chemical mutagen ethylmethane sulfonate (EMS)was used to treat cells,and after 24 hours of incubation,DNA was isolated from these cells and sent for sequencing.Based on the DNA sequence from untreated cells,those treated with EMS showed several of which of the following conversions?
A)G-C to A-T B)G-A to C-T C)G-T to A-C D)G-G to T-G