Consider separate solutions of `0.500 M C_(2)H_(5)OH(aq)`,`0.100 M Mg_(3)(PO_(4))(aq)`,`0.250 M KBr(aq)`, and `0.125 M Na_(3)PO_(4)(aq)` at `25^(@)C`. Which statement is true about these solutions, assuming all salts to be strong electrolytes?
A. 0.100 M `Mg_(3)(PO_(4))_(2)`(aq) has the highest osmotic pressure.
B. 0.125 M `Na_(3)PO_(4)` (aq) has the highest osmotic pressure.
C. 0.500 M`C_(2)H_(5)OH(aq)` has the highest osmotic pressure.
D. They all have the same osmotic pressure.