Which Is an Incorrect Statement Concerning DNA Structure?
A) the Base

Which is an incorrect statement concerning DNA structure?

A) The base and the phosphate units are linked by phosphodiester bonds.
B) The sugar and the phosphate units are linked by hydrogen bonds.
C) The base and the sugar units are linked by $\beta$ -N-glycosidic bonds.
D) Two of the above statements are incorrect.
E) All of the above statements are incorrect.