What are the correct names of the numbered stages (legs) of the phase diagram
a. 1 - freezing, 2 - melting, 3 - boiling <-- i think this is the answer
b. 1 - melting, 2 - condensation, 3 - evaporation
c. 1 - solid, 2 - liquid, 3 - gas
d. 1 - gas, 2 - liquid, 3 - solid