Among the statement (a)-(d), the incorrect ones are:

(a) Octahedral $\mathrm{Co}$ (III) complexes with strong field ligands have very high magnetic moments

(b) When ${\Delta }_0<\mathrm{P}$, the d-electron configuration of $\mathrm{Co}$ (III) in an octahedral complex is ${\mathrm{t}}_{\mathrm{eg}}^4{\mathrm{e}}_{\mathrm{g}}^2$

(c) Wave length of light absorbed by ${\left[\mathrm{Co}(\mathrm{en}{)}_3\right]}^{3+}$ is lower than that of ${\left[{\mathrm{CoF}}_6\right]}^{3-}$

(d) If the ${\Delta }_0$ for an octahedral complex of $\mathrm{Co}$ (III) is $18,000{ \mathrm{cm}}^{-1}$, the ${\Delta }_{\mathrm{t}}$ for its tetrahedral complex with the same ligand will be $16,000{ \mathrm{cm}}^{-1}$