Take $\mathrm{F}{}^{-}$ as weak field (Co(III) high spin) and $\mathrm{NH}{}_3$ as strong field (Co(III) low spin). Select the correct statements about $[\mathrm{CoF}{}_6]{}^{3-}$ and $[\mathrm{Co}(\mathrm{NH}{}_3){}_6]{}^{3+}$.

1. A$[\mathrm{CoF}{}_6]{}^{3-}$ has four unpaired electrons
2. B$[\mathrm{Co}(\mathrm{NH}{}_3){}_6]{}^{3+}$ is diamagnetic
3. CCobalt is in the +3 state in both complexes
4. DThe CFSE of $[\mathrm{CoF}{}_6]{}^{3-}$ is $-2.4{\Delta }_o$