(O) The following figure shows the graphical solution of the next LP problem: Max Z = 9 x1 + 3x2 st 2x1 + x2 = 4, resource(A) 8 x1 + x2 0, x2 > 0 (0,0) (0.667. 2.667) (2.0) (10) A suggestion is made to increas the capacities of resources (A) and (B) at the addittional cost of (20 $/unit), then