The Phase Diagram for Carbon Dioxide Is Shown Below $\longrightarrow$ Gas
B) Solid

The phase diagram for carbon dioxide is shown below. What are the phase changes in order as the pressure is increased starting at 0.5 atm, and the temperature is kept at -80^oC?

A) solid $\longrightarrow$
Gas
B) solid $\longrightarrow$
Liquid $\longrightarrow$
Gas
C) liquid $\longrightarrow$
Gas
D) gas $\longrightarrow$
Solid
E) gas $\longrightarrow$
Liquid