Question 12 3 pts Rexford Corporation produces three products, with costs and selling prices as follows: Product A Product C Machine hours per unit Maximum demand Selling price per unit Variable costs per unit Contribution Margin per unit 500 units $30 Product B 1 500 units $20 $15 $ 5 500 units $15 $18 $12 $6 $ 9 Machining is the bottleneck. Total machine time available is 2,100 hours. What is the maximum contribution margin that Rexford can earn by optimal use of the constrained resource? $9,400 $18,700 $11,500 $5,300