Concerning the flow of costs, which statement is incorrect? The regulations presume that intermingled goods incapable of being subject to specific identification are sold on a LIFO basis. Unsold goods in ending inventory are considered to be the last ones in, and the cost is determined by the most recent costs of purchase or manufacture under the FIFO method Goods left in inventory at the end of the year are assumed to be the first goods purchased or manufactured under the LIFO method Under the average cost method, the average is computed by dividing the total cost of goods that were available for sale by the total number of units available for sale