estion 5 of 5 2/4 b) Determine the cost of the ending inventory and the cost of the goods sold using (1) FIFO and (2) average cost. (Do not round weighted average unit cost. Round Average answers to 0 decimal places, e.g. 5,125.) Current Attempt in Progress Pronghorn Ltd. had a beginning inventory on January 1 of 250 units of product SXL at a cost of $158 per unit. During the year, purchases were as follows: Pronghorn uses a periodic inventory system. At the end of the year, a physical inventory count determined that there were 200 units on hand