Salmone Company reported the following purchases and sales of its only product. Salmone uses a perpetual inventory system. Determine the cost assigned to ending inventory using LIFO. Date Activities Units Acquired at Cost Units Sold at Retail May 1 Beginning inventory 178 units @ $10 = $1.780 May 5 Purchase 248 units @ $12 = $2,976 May 10 Sales 168 units @ $20 May 15 Purchase 128 units @ $13 = $1,664 May 24 Sales 118 units @ $21 $3,680 $2,870 $2,740 $3,560 $6.420