Sayid recorded the temperatures of four substances in a chart.

Which conclusion is best supported by the data?

A. The particles in substance W have a greater average kinetic energy than the particles in substance Z.

B. The particles in substance X have a greater average kinetic energy than the particles in substance Z.

C. The particles in substance W have a lower average kinetic energy than the particles in substance X.

D. The particles in substance Z have a lower average kinetic energy than the particles in substance Y.