Refer to the Figure Below Showing a Substance Diffusing into a Cell

Multiple Choice

Refer to the figure below showing a substance diffusing into a cell over time. Which statement provides an accurate description of this figure?

A) The average rate of motion of particles is greater in panel A than in panel C.
B) In panel B, more particles move into the intracellular compartment than move into the extracellular compartment over the same time period.
C) Panel C shows the system at equilibrium, the state in which particles cease to move between the extracellular and intracellular compartments.
D) The rate of change in concentration of particles in the intracellular compartment gradually increases from panel A to panel B to panel C.
E) The rate of change in concentration of particles in the extracellular compartment remains constant from panel A to panel B to panel C.