Laker Company reported the following January purchases and sales data for its only product. The Company uses a perpetual inventory system. For specific identification. ending inventory consists of 310 units from the January 30 purchase, 5 units from the January 20 purchase, and 30 units from beginning inventory: le Company uses a periodic inventory system. For specific identification, ending inventory consists of 310 units from the January 30 arehase, 5 units from the January 20 purchase, and 30 units from beginning inventory. Determine the cost assigned to ending ventory and to cost of goods sold using (a) specific identification, (b) weighted average. (C) FIFO, and (d) LIFO. Determine the cost assigned to ending inventory and to cost of goods sold using LFO