The following information pertains to Mason Company for Year 2: Beginning inventory 108 units @ $ 26 Units purchased 342 units @ $ 39 Ending inventory consisted of 56 units. Mason sold 502 units at $132 each. All purchases and sales were made with cash. Operating expenses amounted to $3,900. a. Compute the gross margin for Mason Company using the following cost flow assumptions: (1) FIFO, (2) LIFO, and (3) weighted average. b. What is the amount of net income using FIFO, LIFO, and weighted average? (Ignore income tax considerations.) c. Compute the amount of ending inventory using (1) FIFO, (2) LIFO, and (3) weighted average