Consider the substances below that have a liquid crystal state. Which compound will have a solid-to-liquid crystal phase change at a higher temperature and why?

Compound I will have a solid-to-liquid crystal phase change at a higher temperature because it has both stronger London dispersion forces (longer) and dipole-dipole forces.

Compound II will have a solid-to-liquid crystal phase change at a higher temperature because it has weaker stronger London dispersion forces (shorter) and no dipole-dipole forces.