Evansville Company had the following transactions for the month: Purchase Purchase Purchase Number of Units 2 3 4 Cost per Unit $6,000 $7,000 $7,500 Calculate the gross margin for each of the following cost allocation methods, assuming Evansville sold just one unit of these goods for $10,000. Provide your calculations. A first-in, first-out (FIFO) B last-in, first-out (LIFO) weighted average (AVG)