The graph shows a sample of gas when it is hot, cold, and at room temperature. Three graphs are plotted with Number of Particles on the y axis and Energy on the x axis. All three graphs are smooth curves which rise up and then come down. The leftmost curve is the highest and is labeled A. The rightmost curve is labeled C and is the lowest. The curve in the middle is labeled B and has a height less than A and greater than C.

Which statement is correct about curves A and B? (4 points)

a
A represents hot gas and B represents gas at room temperature.

b
A represents gas at room temperature and B represents hot gas.

c
A represents gas at room temperature and B represents cold gas.

d
A represents cold gas and B represents gas at room temperature.