Answer:
DNA has three types of components:
-  Deoxyribose sugar.
- Nitrogenous bases.
- Phosphate group.
Step-by-step explanation:
DNA is composed up of molecule nucleotide and each nucleotide comprises of a Deoxyribose sugar, a phosphate group, and nitrogenous bases. 
 Deoxyribose sugar.is a five carbon or a pentose sugar. 
phosphate group:help in the formation of DNA backbone.
nitrogenous bases: is used in the formation of nucleotides. The nitrogen bases are purines( adenine, guanine), pyrimidines (cytosine, and thymine).