All of the Following Statements About Carbohydrates Are True Except

All of the following statements about carbohydrates are true except which one?

A) They serve as a food source for most organisms.
B) They are used as a structural material for plants.
C) Many have the empirical formula CH₂O.
D) Starch and cellulose are two important carbohydrates made of monosaccharides.
E) Fructose,a sugar found in fruit,has five carbon atoms.