VB Theory Is Poorly Suited to Polar Molecules Such as HCl

VB theory is poorly suited to polar molecules such as HCl because

A) VB theory is a localized bonding model
B) VB theory assumes bonds form only between unpaired electrons in atomic orbitals
C) VB theory can't predict p bonds
D) VB wavefunctions always have even parity with respect to inversion
E) VB wavefunctions do not contain any ionic states