The Atomic numbers of Mn, Fe and Co are 25, 26 and 27 respectively. The order of Magnetic moments among the following is

Question

$(a)\; [MnCl_4]^{2-} \rightarrow [Fe(CN)_6]^{4-} \rightarrow [CoCl_4]^{2-}$ $(b)\; [Fe(CN)_6]^{4-}\rightarrow [MnCl_4]^{2-}\rightarrow [CoCl_4]^{2-}$ $(c)\; [MnCl_4]^{2-} \rightarrow[CoCl_4]^{2-} \rightarrow [Fe(CN)_6]^{4-} $ $(d)\; [Fe(CN)_6]^{4-}\rightarrow [CoCl_4]^{2-} \rightarrow [MnCl_4]^{2-}$