Label Structures A- G in Figure 4-2?

Label Structures A- G in Figure 4-2?

Explanation:

DNA and RNA have great chemical similarities. In their primary structures both are linear polymers (multiple chemical units) composed of monomers (single chemical units), called nucleotides. Cellular RNAs range in length from less than one hundred to many thousands of nucleotides. Cellular DNA molecules can be as long as several hundred million nucleotides. These large DNA units in association with proteins can be stained with dyes and visualized in the light microscope as chromosomes.

A: Nitrogen base pair of cystosine and guanine

B: nitrogen base thymine

C: the sugar deoxryribsome

D: a phosphate molecule

E: Nitrogen base adenine

F nitrogen base guanine

G: Nitrogen base cytosine

i do not get it   at all