What is the electronic arrangement of a metal atom/ion in an octahedral complex with a $d^4$ configuration,if $\Delta_0 < P$ (pairing energy)?
- A$t_{2g}^4 \ e_g^0$
- B$e_g^4 \ t_{2g}^0$
- C$t_{2g}^3 \ e_g^1$
- D$t_{2g}^2 \ e_g^2$
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