The Madison Corporation produces three products with the following costs and selling prices: Product Product A| B| C $15 $20 $20 $8 10 $12 Direct labor hours per unit10 1.5 2.0 3.5 2.0 2.5 Selling price per unit Varlable cost per unit Machine hours per unit If Madison has a limit of 15,000 machine hours but no limit on direct labor hours, then constrained resource is: the ranking of the products from the most proftable to the least proftable use of the O A, B, C O B, C, A o A, C, B O C, A, B