Required information [The following information applies to the questions displayed below.] Laker Company reported the following January purchases and sales data for its only product. The Company uses a periodic inventory system. For specific identification, ending inventory consists of 415 units, where 385 are from the January 30 purchase, 5 are from the January 20 purchase, and 25 are from beginning inventory. Date Activities Jan. 1 Beginning inventory Jan. 10 Sales Jan. 20 Purchase Jan. 25 Sales Jan. 30 Purchase Totals Units Acquired at Cost 235 units @ $16.00 = $ 3,760 Units sold at Retail 185 units @ $25.00 180 units @ $15.00 = 2,700 200 units @ $25.00 385 units @ $14.00 = 800 units 5,390 $11,850 385 units Required: Determine the cost assigned to ending inventory and to cost of goods sold using (a) specific identification, (b) weighted average, (c) FIFO, and (d) LIFO.