The observed magnetic moments of octahedral Mn$^{3+}$, Fe$^{3+}$ and Co$^{3+}$ complexes are 4.95, 6.06 and 0.00 BM, respectively. The correct option for the electronic configuration of Mn$^{3+}$, Fe$^{3+}$ and Co$^{3+}$ metal ions in these complexes, respectively, is