Increasing the Ion Concentration Increases the T_m Because the Ions

Multiple Choice

Increasing the ion concentration increases the T_m because the ions

A) bind to the phosphate groups of the DNA backbone and increase stability.
B) bind to the nucleic acids and disrupt the base pairs, decreasing stability.
C) increase the base length of the DNA, increasing stability.
D) associate with the ribose sugars, decreasing stability.