HELP ITS URGENT!!!! I will give brainleist and thanks please help!!!!

Which of the following will a single nucleotide of deoxyribonucleic acid (DNA) always contain?
A. a five carbon sugar, a nitrogenous base, and a phosphate group
B. a five carbon sugar, an amino acid, and a carboxyl group
a polysaccharide, an amino acid, and a phosphate group
C.
D.
a polysaccharide, a nitrogenous base, and a carboxyl group