What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory?

Question

What is the correct electronic configuration of the central atom in K₄[Fe(CN)₆] based on crystal field theory?

$t_{2g}^4e_g^2$

$t_{2g}^6e_g^0$

${e^3}t_2^3$

${e^4}t_2^2$

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