The following three identical units of item ABC are purchased during July: Assume that one unit is sold on July 30 for $64. Determine the gross profit for July and ending inventory on July 31 using the first-in, first out (FIFo) method. a. Gross profit =$22; ending inventory =$84 b. Gross profit =$11; ending inventory =$73 c. Gross profit =$33; ending inventory =$95 d. Gross profit =$33; ending inventory =$84