Co-ordination number of Fe in the complexes ${\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]}^{4-},{\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]}^{3-}$ and ${\left[{\mathrm{FeCl}}_4\right]}^{-}$ would be respectively

• A

  2,3,3

• B

  6, 6, 4

• C

  6,3,3

• D

  6,4,6