In which of the following pairs of solutions will the values of the vant Hoff factor be the same?
A. `0.05M K_(4)[Fe(CN)_(5)]` and `0.10MFeSO_(4)`
B. `0.10MK_(4)[Fe(CN)_(6)]` and `0.05M FeSO_(4)(NH_(4))_(2)SO_(4).6H_(2)O`
C. `0.20M NaCl` and `0.10M BaCl_(2)`
D. `0.05M FESO_(4) (NH_(4))_(2)SO_(4). 6H_(2)O` and `0.02M KCl. MgCl_(2).6H_(2)O`
