The following three identical units of Item PX2T are purchased during April: Item Beta Units Cost April 2 Purchase 1 $231 April 15 Purchase 1 232 April 20 Purchase 1 233 Total 3 $696 Average cost per unit $232 ($696 3 units) Assume that one unit is sold on April 27 for $283. 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 method. Gross Profit Ending Inventory a. First-in, first-out (FIFO) $fill in the blank 1 $fill in the blank 2 b. Last-in, first-out (LIFO) $fill in the blank 3 $fill in the blank 4 c. Weighted average cost $fill in the blank 5 $fill in the blank 6