Both CO3^2- and CIF3 have three atoms bonded to a central atom. What is the best explanation for why CO3^2- has trigonal planar electronic geometry, while CIF3 has trigonal bipyramidal electronic geometry? A: CO3^2- has multiple resonance structures, while CIF3 does not. B: CO3^2- has a charge of -2, while CIF3, has no charge. C: CIF3 has lone pairs on its central atom, while CO3^2- has none D: CO3^2- has lone pairs on its central atom, while CIF3 has none.