The compound in which the number of $d \pi -p\pi $ bonds are equal to those persent in $ClO_4^{-}$

Question

\[\begin {array} {1 1} (1)\;XeF_4 & \quad (2)\;XeO_3 \\ (3)\;XeO_4 & \quad (4)\;XeF_6 \end {array}\]