Which best explains the difference between a ball-and-stick model of a chemical compound and a space-filling model?

a. ball-and-stick models can show compounds in three dimensions, but space-filling models cannot.
b. space-filing models can show compounds in three dimensions, but ball-and-stick models cannot.
c. ball-and-stick models show the bonds between atoms, but not the relative sizes of atoms. space-filling models show the relative sizes of atoms, but not the bonds between atoms.
d. space-filling models show the bonds between atoms, but not the relative sizes of atoms. ball-and-stick models show the relative sizes of atoms, but not the bonds between atoms.