In $\mathrm{CsCl}$ structure, the coordination number of ${\mathrm{Cs}}^{+}$ is

Equal to that of ${\mathrm{Cl}}^{-}$ that is 8

Not equal to that of ${\mathrm{Cl}}^{-}$, that is 6

Not equal to that of ${\mathrm{Cl}}^{-}$, that is 8

Equal to that of ${\mathrm{Cl}}^{-}$, that is 6