The number of pairs of the solutions having the same value of the osmotic pressure from the following is _________.
(Assume 100% ionization)
A. 0.500
M C2H5OH (aq) and 0.25
M KBr (aq)
B. 0.100
M K4[Fe(CN)6] (aq) and 0.100
M FeSO4(NH4)2SO4 (aq)
C. 0.05
M K4[Fe(CN)6] (aq) and 0.25
M NaCl (aq)
D. 0.15
M NaCl (aq) and 0.1
M BaCl2 (aq)
E. 0.02
M KCl.MgCl2.6H2O (aq) and 0.05
M KCl (aq)