For the constraint of a linear optimizing function $\mathrm{z}={\mathrm{x}}_1+{\mathrm{x}}_2$ given by $x_1+x_2\le 1,3x_1+x_2\ge 3\text{ and }{x}_1,x_2\ge 0$

There is no feasible region 

There are two feasible regions

There are infinite feasible regions

None of these