O at a productive efficient point. Question 12 Exhibit 2-9 Alex Adam Good A Good B Good A Good B 300 0 160 25 225 30 120 50 150 60 80 75 75 90 40 100 0 120 0 Refer to Exhibit 2-9. For Alex, the opportunity cost of producing one unit of good A is unit B 3.00 O 0.33 O 0.75 0 1.33 P X W