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1-4. Abby Company, using the periodic inventory system, began the year with 260 units of product B in inventory with a unit cost of $37. The following additional purchases of the product were made: At end of year, Abby Company had 480 units of its product unsold. Calculate the cost of ending inventory as well as cost of goods sold by the (a) FIFO, (b) LIFO, and (c) weighted-average methods. (Round the weighted average to the nearest cent.)