In most organisms, macromolecules play a central role as the energy source. This macromolecule must be transformed in the body to produce the usable energy molecule . Interestingly, this energy molecule is a type of macromolecule. A
carbohydrate, adenosine triphosphate, nucleic acid

B
lipid, atropine tetraphosphate, protein

C
protein, adenosine triphosphate, lipid

D
carbohydrate, atropine triphosphate, protein