The IUPAC name of the coordination compound ${\mathrm{K}}_3\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]$ is:

• A

  potassium hexacyanidoferrate (II)

• B

  potassium hexacyanidofenate (III)

• C

  potassium hexacyanoiron (II)

• D

  tripotassium hexacyanidoiron (II)