$24.$ Which of the Boolean expressions is equivalent to the following truth table?

Xx Y Z Output U

$0$

$0$

$0$

$0$

$1$

$1$

$1$

$|$

$($a$)=$ X$-$Y$-$ Z$$

$($b$)$U $=$ X$+$Y$+$ Z$-$

$($c$)$U$=$ X$+$Y$-$ Z$-$

$($d$)$U $=($X$+$Y$)-$Z

$($e$)$U$=$ XK $-$ Y $.$ Z