Exercise 6-3 Perpetual: Inventory costing methods P1 Laker Company reported the following January purchases and sales data for its only product. Required The company uses a perpetual inventory system. 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. (Round per unit costs and inventory amounts to cents.) For specific identification, ending inventory consists of 180 units from the January 30 purchase, 5 units from the January 20 purchase, and 15 units from beginning inventory