Cost Flow Methods The following three identical units of Item K113 are purchased during Apriif ($624+3units) Assupe that one unit is sold on April 27 for $300. Determine the gross profit for April and ending inventory on Aprit 30 using the (a) first-in, first-out (FiFo): (b) iast-int. first-out (UFO); and (c) welghted average cost method