The correct order of spin only magnetic moments for the following complex ions is

$\displaystyle \left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}<\left[\mathrm{CoF}_6\right]^{3-}<\left[\mathrm{MnBr}_4\right]^{2-}<\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$

$\displaystyle \left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}<\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}<\left[\mathrm{CoF}_6\right]^{3-}<\left[\mathrm{MnBr}_4\right]^{2-}$

$\displaystyle \left[\mathrm{CoF}_6\right]^{3-}<\left[\mathrm{MnBr}_4\right]^{2-}<\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}<\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$

$\displaystyle \left[\mathrm{MnBr}_4\right]^{2-}<\left[\mathrm{CoF}_6\right]^{3-}<\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}<\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$