Required information [The following information applies to the questions displayed below.] Hemming Co. reported the following current-year purchases and sales for its only product. Units Sold at Retail 160 units$40.20 250 units $40.20 375 units$40.20 Activities Units Acquired at Cost Dan. 1 Beginning inventory Jan. 10 Sales Mar.14 Purchase Mar.15 Sales July 30 Purchase Oct. 5 Sales Oct. 26 Purchase 205 units @$.10.20 =2,091 300 units $15.20-4,560 400 units $20.208,080 195 units $25.202,646 Totals 1,010 units $17,377 785 units Required Hemming uses a perpetual inventory system 1. Determine the costs assigned to ending inventory and to cost of goods sold using FIFO 2. Determine the costs assigned to ending inventory and to cost of goods sold using LIFO 3. Compute the gross margin for FIFO method and LIFO method