Tree Seedlings has the following current-year purchases and sales for its only product Date Activities Units Acquired at Cost Units Sold at Retail Jan. 1 Beginning inventory 240 units @ $2 = $ 480 Jan. 3 Sales 142 units @ $8 Feb. 14 Purchase 390 units @ $3 - $1,170 Feb. 15 Sales 260 units @ $8 June 30 Purchase 290 units @ $4 $1,160 Nov. 6 Sales 236 units @ $8 Nov.19 Purchase 100 units @ $5 - $ 500 Totals 1,020 units $3,310 638 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