Which of the following statements correctly describes the relationship between Frontier Molecular Orbital (FMO) theory and the labels electrophile and nucleophile?
a) Electrophiles are characterized by high-energy HOMO, while nucleophiles have low-energy LUMO.
b) Nucleophiles are electron-poor species, while electrophiles are electron-rich.
c) Electrophiles are attracted to areas of high electron density, while nucleophiles are attracted to areas of low electron density.
d) Frontier Molecular Orbital theory is not applicable to electrophiles and nucleophiles.