Which of the following describes the difference between the motion of liquid water and water vapor?
A. The particles in the liquid do not move, but the particles in a gas can move back and forth.
B. The motion of the particles is the same in both states, but they move slower in the gas state.
С. The particles in a gas can slide past each other, while the particles in a liquid are locked in place.
D. The particles in a liquid can slide past each other, while the particles in a gas are free to move in all directions.