table below, in addition to the feasible production plan. The relevant costs are: - Regular time production cost is S20/unit. - Overtime production cost is \$27iunit. - Subcontracting cost is \$33/unit. - Inventory is held at a cost of $4 iunitiquarter. - Units may be backordered at a cost of $6 'unitiquarter. What is the inventory cost for the year? What is the backorder cost for the year? What is the total overtime production cost for the year? What is the total cost for the year