[The following information applies to the questions displayed below.] Tree Seedlings has the following current-year purchases and sales for its only product. Date Activities Units Acquired at Cost Units Sold at Retail January 1 Beginning inventory 100 units @ $2 = $ 200 January 3 Sales 86 units @ $ 8 February 14 Purchase 138 units @ $3 = $ 414 February 15 Sales 120 units @ $ 8 June 30 Purchase 150 units @ $4 = $ 600 November 6 Sales 122 units @ $ 8 November 19 Purchase 44 units @ $5 = $ 220 Totals 432 units $ 1,434 328 units The company uses a periodic 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 profit for each method.