[单选题]
The graph below shows z; 9/+6tegjl+ucb kfw the change in m6dxe ,flg4z*w ass of a potato slice (%) at different concentratie4ldgzf, *6xw ons of sucrose solution (mol dm$^{-3}$ ).
A. 0.01 mol dm$^{-3}$
B. 0.22 mol dm$^{-3}$
C. 0.38 mol dm$^{-3}$
D. 0.57 mol dm$^{-3}$