Based on the Phase Diagram of a Pure Substance Given

Multiple Choice

Based on the phase diagram of a pure substance given below, which statement is true?

A) The solid phase has a lower density than the liquid phase.
B) The triple point is at a higher temperature than the normal melting point.
C) The substance changes from a solid to a liquid as one follows the line from C to D.
D) The substance changes from a liquid to a gas as one follows the line from C to D.
E) Point B represents the critical temperature and pressure for the substance.