The activity for a specific inventory item for the month of March was as follows: If of Per Unit Total Units Cost Cest October 1 inventory 30 $28 $840 Purchases: October 5 100 30 3,000 October 13 60 32 1,920 October 15 20 36 3.240 Goods Available for Sale 280 $9.000 Sales October 8 110 October 22 120 230 Using weighted average cost under a periodic inventory system, what is the balance of Ending Inventory (round intermediate and final calculations to the nearest dollar) as at October 317 $2,160 $2,040 $1,980 $1,600