The correct increasing order of stability of the complex based on \( \Delta_o \) value is:
I. \([\mathrm{Mn}(\mathrm{CN})_6]^{3-}\) II. \([\mathrm{Co}(\mathrm{CN})_6]^{4-}\) III. \([\mathrm{Fe}(\mathrm{CN})_6]^{3-}\) IV. \([\mathrm{Fe}(\mathrm{CN})_6]^{3-}\)
