Because the external sucrose concentration is the same, while B absorbs water or does not move, A and C lose water, so B has the largest concentration at the beginning, and C loses more water, which means that C has the smallest concentration at the beginning. After the experiment, B is greater than or equal to the outside world (because the intracellular fluid of cells may be just the same as the concentration of sucrose solution without plasma wall separation, and there is no obvious change. It is also possible that the concentration of sucrose solution is higher than that of sucrose solution and it absorbs water and expands, but because of the support of cell wall, there is no obvious phenomenon when we observe cells), and the water in and out of A and C are dynamic and stable, so A=C, so B ≥ A = C after the experiment.