Harding Systems, Inc. uses a periodic inventory system. The purchases of a particular product during the year are shown below: Date Purchased Sold Balance Units Units Cost Total Units Units Cost COGS Units Units Cost Total Jan. 1 1100 $ 8 $8800 Feb. 7 1500 $9 $13500 July 10 Nov. 25 1000 $11 $11000 Dec. 31 On July 10 Harding Systems, Inc. sold 1600 units. At December 31 the ending inventory consisted of 2000 units. Refer to the above data