Which statement about intermolecular forces is not true?
A. In a sample of CCl4, intermolecular forces occur between CCl4 molecules.
B. For molecules of a similar size, hydrogen-bonding is generally stronger than London (dispersion) forces.
C. Samples of nonpolar molecules usually exhibit London (dispersion) forces only.
D. Dipole-dipole intermolecular forces are found between nonpolar molecules.