Valence Bond Theory Based Unhybrized Orbitals Fails to Adequately Describe

Valence bond theory based unhybrized orbitals fails to adequately describe the structure of methane

A) as carbon has only two unpaired electrons.
B) because p orbitals on carbon cannot overlap with s type orbitals on H to form bonds.
C) because it fails to adequately describe the shape of the methane molecule.
D) because the Aufbau principle is violated.
E) because methane is a square planar molecule.