which is the best interpretation of the two flat portions of the graph

A. These show where kinetic energy is increased

B. These show where temperature is at 0 Celsius

C. These show where thermal energy does not exist

D. These show were changes of state are occurring​

which is the best interpretation of the two flat portions of the graphA These show where kinetic energy is increasedB These show where temperature is at 0 Celsi class=