Which of the following statements about noncovalent bonding interactions is NOT true?

Van der Waals interactions, also known as dispersion forces, are the weakest of the attractive noncovalent bonding interactions.
Charge-induced dipole interactions are inversely proportional to the square of the distance between the two atoms.
A charge may induce formation of a dipole in a nearby polarizable molecule.
All noncovalent bond interactions are inherently electrostatic in nature.