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 perpetual inventory system. 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. Date January 1 Activities Beginning inventory 140 units Units Acquired at Cost @ $ 6.00 = Units sold at Retail $ 840 January 10 Sales 100 units @ $ 15 January 20 Purchase 60 units @ $ 5.00 = 300 January 25 January 30 Sales 80 units @ $ 15 Purchase Totals 180 units 380 units @ $ 4.50 = 810 $ 1,950 180 units Required: 1. Complete the table to determine the cost assigned to ending inventory and cost of goods sold using specific identification. 2. Determine the cost assigned to ending inventory and to cost of goods sold using weighted average. 3. Determine the cost assigned to ending inventory and to cost of goods sold using FIFO. 4. Determine the cost assigned to ending inventory and to cost of goods sold using LIFO.