Optimize the following Boolean functions F together with the don$$t care conditions d in

$($a$)$ sum$-$ of$-$ products and $($b$)$ product$-$ of$-$ sums form:

F$($W$,$ X$,$ Y$,$ Z$)=\backslash$Sigma m $(5,6,11,12),$ d$($W$,$ X$,$ Y$,$ Z$)=\backslash$Sigma m $(0,1,2,9,10,14,15)$