The identical units of merchandise were purchased during March, as shown Steel Plate Units Cost $830 1 MA 10 Purchase Purchase 500 19 Purchase 1 380 $2.550 Total Resume that one unit is sold on March 23 for $1.125. Determine theores profit for March and ending inventory an March 31 ming () FIFO, UFO, and (c) average cost methods Gross Profit Ending Inventory a. First in, first out (FIFO) b. Last-in, first-out (LIFO) Average cast