Solve the following LP formulation graphically. You can use either the isoprofit line or corner point approach:

Maximize $Z=401+502$

s$.$t$.$

$x_1+2240$

$41+32120$

$x_1,x_{2}0$

Select one:

a$.Z=400,x1=0,x2=20$

b$.Z=1360,x1=24,x2=8$

c$.Z=3000,x1=37\mathrm{.}14,x2=20$

d$.Z=2100,x1=30,x2=0$