Novak Corp. sells six different products. The following information is available on December 31: Inventory item Units Cost per unit Net Realizable Value per unit Estimat Tin $610 $615 Titanium 25 6100 6040 Stainless steel 100 2440 2330 Aluminum 100 430 350 Iron 50 490 500 Fiberglass 370 360 When applying the lower-of-cost-or-net-realizable-value rule to each item, what will Novak total ending inventory balance be? $507650 $507250 $528250 $508125