Causwell Company began 2013 with 28,000 units of inventory on hand. The cost of each unit was $4. During 2013 an additional 48,000 units were purchased at a single unit cost, and 38,000 units remained on hand at the end of 2013 (38,000 units therefore were sold during 2013). Causwell uses a periodic inventory system. Cost of goods sold for 2013, applying the average cost method, is $174,800. The company is interested in determining what cost of goods sold would have been if the FIFO or LIFO methods were used. Required: 1. Determine the cost of goods sold for 2013 using the FIFO method. [Hint: Determine the cost per unit of 2013 purchases.] 2. Determine the cost of goods sold for 2013 using the LIFO method.