(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 Units Acquired at Cost 280 units @ $13.20 = $ 3,696 240 units @ $43.20 460 units @ $18.20 8,372 Date Activities Jan. 1 Beginning inventory Jan. 10 Sales Mar. 14 Purchase Mar. 15 Sales July 30 Purchase Oct. 5 Sales Oct. 26 Purchase Totals 410 units @ $43.20 480 units @ $23.20 11,136 450 units @ $43.20 = 180 units @ $28.20 1,400 units 5,076 $28,280 1,100 units a) Periodic FIFO Cost of Goods Available for Sale Cost of Goods Sold Cost of Goods Cost per # of units Cost per Available for Cost of # of units unit sold unit Goods Sold Sale 280 $ 13.20 $ 3,696 240 $ 13.20 3,168: Ending Inventory # of units Cost Ending in ending inventory per unit Inventory 40: $13.20 $ 528 Beginning inventory Purchases: March 14 July 30 460 $ 18.20 480 $ 23.20 180 $ 28.20 1,400 8,372 11,136 5,076 October 26 Total $ 28,280 240 $ 3,168 40 $ 528 b) Periodic LIFO Cost of Goods Available for Sale Cost of Goods Sold Cost per Cost of Goods # of units Cost per Cost of # of units unit Available for sold unit Goods Sold Sale 280 $ 13.20 $ 3,696 Ending Inventory # of units Cost Ending in ending per unit Inventory inventory Beginning inventory Purchases: March 14 July 30 460 $ 18.20 480 $ 23.20 180 $ 28.20 1,400 8,372 11,136 5,076 28,280 October 26 Total $ 0 $ $ 0 c) Gross Margin FIFO LIFO