Q46. If an iron (III) complex with the formula $\left[ \mathrm { Fe } \left( \mathrm { NH } _ { 3 } \right) _ { x } ( \mathrm { CN } ) _ { y } \right] ^ { - }$has no electron in its $e _ { g }$ orbital, then the value of $x + y$ is\\
(1) 4\\
(2) 5\\
(3) 6\\
(4) 3