25 POINTS!!!!!
In the molecule pictured above, the section in brackets within the box can be described as which of the following?

A. A nucleotide, which encodes genetic information in molecules such as DNA
B. An amino acid, which encodes genetic information in molecules such as DNA
C. A nucleotide, which is the basic component of proteins such as enzymes
D. An amino acid, which is the basic component of proteins such as enzymes