Consider the following linear program: Max Z $=-3+4$y Subject to $-$x $+$ y $>=12$x $-$ y $<=2$ x $+$ y $<=4$ x$,$y $>=0$ Which of the following are true?

Note: For these problems the LP is similar except the constraints may change from "greater$-$than$-$or$-$equal to$"$ to "less$-$than$-$or$-$equal to$"$ or vice versa. For each problem, check your constraints and the feasible region carefully.

Group of answer choices

$($x$,$ y$)=(2\mathrm{.}0,2\mathrm{.}0)$ is feasible corner point to this LP$.$

None of the answers are correct.

An iso$-$profit line for this LP is: y $=0\mathrm{.}75*$x $+3$

This LP is unbounded, that is$,$ there is no optimal solution.

This LP has an unbounded feasible region.