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Ram Roy's firm has developed the following supply, demand, cost, and inventory data. =] Supply Available Regular Demand Period Time Overtime Subcontract Forecast 1 40 15 15 50 2 35 15 15 65 3 40 15 15 55 Initial inventory 30 units Regular-time cost per unit $100 Overtime cost per unit $160 Subcontract cost per unit $250 Carrying cost per unit per month $2 Assume that the initial invéntory has no holding cost in the first period and backorders are not permitted. Allocating production capacity to meet demand at a minimum cost using the transportation method, the total cost is $D (enter your response as a whole number).