$\begin{array}{1 1}(A)\;Z=x+y\; subjected \;to \;constraints 8x+5y\leq 120,2x+3y\leq 120 \\ (B)\;Z=x+y\; subjected \;to \;constraints \;5x+8y\leq 400,2x+3y\leq 120 \\(C)\;Z=x+y\; subjected\; to \;constraints 8x+5y\leq 400,2x+3y\leq 120 \\ (D)Z=x+y\; subjected \;to\; constraints \;8x+5y\leq 100,2x+3y\leq 120\end{array} $