Exercise 19-11 Mars Company manufactures and sells three products. Relevant per unit data concerning each product are given below: Product Selling price Variable costs and expenses Machine hours to produce S10 $13 $20 S9 $17 2 2 Compute the contribution margin per unit of limited resource (machine hours) for each product. (Round contribution margin per unit to 2 decimal places, e.g. 1.25.) Product A Product B Product Coabtinmai Assuming 3,000 additional machine hours are available, which product should be manufactured