Tree Seedlings has the following current-year purchases and sales for its only product. Units Sold at Retail Date Activities Jan. 1 Beginning inventory Units Acquired at Cost 140 units @ $2 = $ 280 Jan. 3 Sales Feb.14 Purchase 102 units @ $8 210 units @ $3 = $ 630 Feb.15 Sales June 30 Purchase 160 units @ $8 190 units @ $4 = $ 760 Nov. 6 Sales 146 units @ $8 Nov. 19 Purchase Totals 60 units @ $5 600 units = $ 300 $1,970 408 units Required: The company uses a perpetual inventory system. a. Determine the costs assigned to ending inventory and to cost of goods sold using FIFO. b. Determine the costs assigned to ending inventory and to cost of goods sold using LIFO. c. Compute the gross margin for each method. Complete this question by entering your answers in the tabs below. Required A Required B Required C Determine the costs assigned to ending inventory and to cost of goods sold using FIFO. Perpetual FIFO: Date January 1 January 3 Goods Purchased Cost of Goods Sold # of units Cost per unit # of units sold Cost per Cost of Goods unit Sold # of units 140 @ Inventory Balance Cost per unit Inventory Balance $ 2.00 = $ 280.00