Cullumber Manufacturing produces thermal tents and sleeping bags. The company's products are in high demand due to the quality and durability of the products. Cullumber estimates it could sell 610 tents per month and 610 sleeping bags per month. Following is information for each of these products: Selling price per item Variable cost per item Contribution margin per item Tent Sleeping Bag $71.00 $46.00 55.00 30.00 $16.00 $16.00 Machine hours per item 1.10 1.00 Cullumber has 825 machine hours available each month. If Cullumber allocates its production capacity between the tents and sleeping bags so that it maximizes the company's contribution margin, what will the contribution margin be? $12880 $19520 $13200 $34500