What is the total cost associated with producing eight units of the control variable, Q (identify point B in the table)? Control Total variable Benefits 0 1 2 3 4 5 6 7 8 9 10 B(Q) 0 900 1,700 2,400 A 3,500 3,900 4.200 4,400 4,500 4,500 Total Net Costs Marginal Marginal Marginal Net Cost Benefit Benefit Benefits MB(Q) C(Q) N(Q) 0 0 100 800 300 C 600 1,800 1,000 2,000 1,500 2,000 2,100 1,800 2,800 1,400 B 800 4,500 0 5,500 -1,000 900 800 700 600 500 D 300 200 100 0 MC(Q) 100 200 E 400 500 600 700 800 900 1,000 MNB(Q) 800 600 400 200 F -200 -400 -600 -800 -1,000