SiCo begins operations in 20X2 and uses the periodic method. SiCo's December 31, 20X2 ending inventory consists of 400 units bought in January, 20X2 @ $11. Its December 31, 20X3 ending inventory consists of 1, 300 units. During January, 20X3, SiCo buys 1, 800 units @ $14; in July, it buys 2.200 units @ $17; and in October, it buys 2, 300 units @ $13. If SiCo uses LIFO, its 20X3 costs of goods sold is. .. $80, 000 $79, 900 $80, 800 $78, 700 Use the following information for problems #30-33. LuCo begins operations in 20X4 and uses the periodic method and LIFO costing. Its merchandise purchases are as follows