The DNA "Backbone" Is Composed of

The DNA "backbone" is composed of

A) An amide bond between deoxyribose and a nitrogenous base
B) A glycosidic bond between deoxyribose and a nitrogenous base
C) A phosphodiester bond between 3^! and 5^! hydroxyl groups of adjacent deoxyribose residues
D) A phosphodiester bond between 2^! and 5^! hydroxyl groups of adjacent deoxyribose residues
E) None of the above is correct