The following three identical units of Item Alpha are purchased during April: Item Alpha Units Cost Apr. 2 Purchase 1 $259 14 Purchase 1 263 28 Purchase 1 267 Total 3 $789 Average cost per unit $263 ($789 + 3 units) Assume that one unit is sold on April 30 for $345. Determine the gross profit for April and ending inventory on April 30 using the (a) first-in, first-out (FIFO); (b) last-in, first-out (LIFO); and (c) weighted average cost methods. a. First-in, first-out (FIFO) b. Last-in, first-out (LIFO) c. Weighted average cost Gross Profit Ending Inventory $ $