PEZ-B Cost flow.methods The following three identical units of Item B zure purchased during lune: Units June Cost $140 1 Item B 2 Purchase Purchase Purchase Total Average cost per unit $450 $i$4503 units Assume that one unit is sold op June 27 for $270. Determine the gross profit for lune and ending Inventory on June 30 yasing the (a first-in, first-out (FIFO), (b) last-in, first-out (LIFO); and (c) weighted average cost methods