Which statements correctly compare eugenol and guaiacol?

Which statements correctly compare eugenol and guaiacol? Select all that apply.
The chemical structure of eugenol is based on the chemical structure of guaiacol.
Eugenol has a different flavor from guaiacol.
Eugenol contains a group of three carbon atoms and five hydrogen atoms that is not present in guaiacol.
Like guaiacol, eugenol contains a ring shape.