The IUPAC name of $$[Ni(NH_3)_4][NiCl_4]$$ is

A

Tetrachloronickel(II) - tetraamminenickel(II)

B

Tetraamminenickel(II) - tetrachloronickel (II)

C

Tetraamminenickel(II) - tetrachloronickelate (II)

D

Tetrachloronickel (II) - tetraamminenickelate (0)