Answer the Questions Based on the Phase Diagram Given Below

Answer the questions based on the phase diagram given below

-The line that connects points A and B in the given phase diagram is:

A) is the vapor pressure curve of the solid phase.
B) shows the melting point variation of a solid with pressure.
C) is the vapor pressure curve of the liquid phase.
D) is the vapor pressure curve of the gas phase.
E) shows the boiling point variation of a liquid with pressure.