Match the following, where EAN stands for Effective Atomic Number, the number of electrons on the central metal ion, including ligands in the bonding:

Question

$\begin {array} {1 1}A.\; \text{EAN of Fe in} [Fe(CN)_6]^{4-} & a.\; 86\\ B.\; \text{EAN of Co in} [Co(NH_3)_6]^{3-} & b.\; 48\\ C.\; \text{EAN of Ni in} [Ni(CO)_4]^{3-} & c.\; 24\\ D.\; \text{EAN of Pt in} [Pt(NH_3)_6)]^{4+} & d.\;36 \end {array}$

$\begin {array} {1 1} 1 \to d \quad 2 \to d \quad 3 \to d \quad 4 \to a \\ 1 \to d \quad 2 \to c \quad 3 \to b \quad 4 \to a \\ 1 \to d \quad 2 \to c \quad 3 \to a \quad 4 \to b \\ 1 \to d \quad 2 \to b \quad 3 \to a \quad 4 \to c \end {array}$