Spencer 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 $19 $15 $16 $7 $13 $12 2 (1) Compute the contribution margin per unit of the limited resource (machine hours) for each product. (Round contribution margin per unit to 2 decimal places, e.g. 1.25.) Product roduct B Product Contribution margin per unit of limited resource (2) Assuming 1,650 additional machine hours are available, which product should be manufactured