Which of the Following Is Not True of Molecular Orbitals

Multiple Choice

Which of the following is not true of molecular orbitals

A) The number of molecular orbitals formed is always equal to the number of atomic orbitals combined.
B) A molecular orbital can accommodate up to two electrons.
C) When electrons are added to orbitals of the same energy, the most stable arrangement is predicted by Hund's rule.
D) Low-energy molecular orbitals fill before high-energy molecular orbitals fill.
E) For any substance, the number of electrons in molecular orbitals is equal to the sum of all the valence electrons on the bonding atoms.