[单选题]
The graph below shows the change ag+2. n2o3 dcfz+( ucjy kvk2vin mass of a potato slice(4akumo: 0w (a ycsdaij.+3en (%) at different concentrations of sucrose solutiou4n a y3((o+0mdaikaswj:. cen (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$^{-3}$