In Agarose Gel Electrophoresis, DNA Is Visualized by ____

In agarose gel electrophoresis, DNA is visualized by ____. ​

A) staining the gel with an agarose-binding dye so the gel, but not the DNA bands, fluoresces under UV light
B) staining the DNA with a DNA-binging dye that fluoresces under natural light
C) staining the DNA with X-gal so that the DNA bands appear blue
D) staining the gel with a DNA-binding dye that fluoresces under UV light
E) staining the gel with a DNA-binding dye that fluoresces under natural light