James has opened the valve on the propane tank for his BBQ grill. He later notices how cold the top of the tank feels. What is the reason for this?
A) The liquid inside is condensing; losing energy to overcome the interactions holding them together
B) The liquid inside is vaporizing; losing energy to overcome the interactions holding them together.
C) The liquid inside is vaporizing; gaining energy to overcome the interactions holding them together.
D) The liquid inside is freezing; gaining energy to overcome the interactions holding them together