The units of an item available for sale during the year were as follows: Jan 1 Inventory 22 units at 127 April 15 Purchase 138 units at 117 September 9 Purchase 27 units at 125 There are 42 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the inventory cost using the last-in, first-out (LIFO)