Exhibit 11-1 for the Following Question(s), Consider the Graphic Below

Exhibit 11-1 For the following question(s) , consider the graphic below: Refer to Exhibit 11-1. At a constant pressure of 1 atmosphere, the transition from Phase III to Phase II is

A) an exothermic process in which solid molecules lose energy
B) an exothermic process in which gas molecules lose energy
C) an endothermic process in which solid molecules gain energy
D) an endothermic process in which liquid molecules gain energy
E) an endothermic process in which gas molecules gain energy