cation.com ER 5, 6 &7 and Study Help EST CHAPTER 5, 6&7-Problems Help Save Required information (The following information applies to the questions displayed below. The following information pertains to Mason Company for Year 2: Beginning inventory Units purchased 112 units 28 350 units $42 Ending inventory consisted of 40 units. Mason sold 422 units at $84 each. All purchases and sales were made with cash. Operating expenses amounted to $3,300. Required a. Compute the gross margin for Mason Company using the following cost flow assumptions: (1) FIFO, (2) LIFO, and (3) weighted average. (Round cost per unit to 3 decimal places and final answers to the nearest whole dollar amount.) FIFO