Harper Co. provided the following information concerning two products: contribution margin per unit- product 12 $46 Contribution margin per unit-product 43 $30. Machine hours required for one unit-product 12 2.5 hours. Machine hours required for one unit-product 43 1.5 hours. Instructions: Compute the contribution margin per unit of limited resource for each product. Which product should Harper tell its sales personnel to push to customers?