Required information [The following information applies to the questions displayed below.) Dugan Sales had the following transactions for jackets in 2014, its first year of operations: Jan. 20 Apr. 21 July 25 Sept. 19 Purchased 72 units @ $ 1,296 $18= Purchased 466 units @ 9,320 $20 = Purchased 245 units @ 5,635 $23 = Purchased 84 units @ 2,520 $30 = During the year, Dugan Sales sold 815 jackets for $55 each. b. Compute the difference in gross margin between the FIFO and LIFO cost flow assumptions. FIFO LIFO Difference Gross margin