Cost Flow Assumptions and Methods The following three identical units of ttem P401C are purchosed during Aprit: ($3303units) Assume that one unit is sold on April 27 for $147. Determine the gross profit for April and ending inventory on April 30 using the (a) first-in, first-out (FtFO); (b) last-in, first-out (UFO); and (c) weighted average cost method