1) A company made the following merchandise purchases and sales during the month of May: May 1 May 5 May 20 Purchased Purchased Purchased 380 units at $15 each 270 units at $17 each 300 units at $22 each Sold 800 units There was no beginning inventory. Calculate Cost of Goods Sold and Ending Inventory under (a) FIFO, (b) LIFO, and (c) Weighted Average.