Why Are Nucleic Acids Considered Macromolecules but Not Macronutrients

Why are nucleic acids considered macromolecules but not macronutrients?

A) They can be assembled into large molecules,but organisms need only small quantities of them in the diet.
B) They can be assembled into DNA or RNA,but organisms cannot break them down into their constituent parts.
C) They can be assembled into large molecules,but they do not serve as an energy source.
D) They can be assembled into large proteins,but organisms require only small amounts of them in the diet.
E) They can be assembled into DNA or RNA,but they are smaller than amino acids,carbohydrates,or lipids.