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. For specific identification, ending inventory consists of 240 units, where 180 are from the January 30 purchase, 5 are from the January 20 purchase, and 55 are from beginning inventory. Required: Assume the periodic inventory system is used. 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. Complete this question by entering your answers in the tabs below. Determine the cost assigned to ending inventory and to cost of goods sold using LIFO