Ram Roy's firm has developed the following supply, demand, cost, and inventory data. Supply Available D Regular Demand Period Time Overtime Subcontract Forecast 1 40 15 10 40 2 35 15 10 60 3 30 20 10 50 Initial inventory Regular-time cost per unit Overtime cost per unit Subcontract cost per unit Carrying cost per unit per month. 20 units $100 $150 $250 $2 Allocating production capacity to meet demand at a minimum cost using the transportation method, the total cost is $ (enter your response as a whole number). Assume that the initial inventory has no holding cost in the first period and backorders are not permitted