$4-24.$ Consider the following LP model: Maximize z $=5$x$1+2$x$2+3$x$3$ subject to The following optimal tableau corresponds to specific values of by and b Basic x X$4$xs x$4$ Solution $15$ xi xs C$-81$ Determine the following: $($a$)$ The right$-$hand$-$side values, by and by$.($b$)$ The optimal dual solution. $($c$)$ The elements a$,$ b$,$c$,$ d$,$ and e antimal tableau for a maximization LP model with three $($S$)$