The crystal field stabilization energy (CFSE) for $[{\text{CoCl}}_6{]}^{4-}$ is $18000{\text{cm}}^{-1}$. The CFSE for $[{\text{CoCl}}_4{]}^{2-}$ will be:

1. A
   $6000{\text{cm}}^{-1}$
2. B
   $16000{\text{cm}}^{-1}$
3. C
   $18000{\text{cm}}^{-1}$
4. D
   $8000{\text{cm}}^{-1}$