63. Using the average-cost method under the periodic inventory system, the average cost is computed as total cost of goods available for sale divided by the a. Total units available for sale. b. Total goods in ending inventory. c. Total cost of goods sold. d. Total cost of goods purchased. 64. Which of the following methods identifies the cost of each item in the ending inventory? a. Last-in, first-out (LIFO) b. First-in, first-out (FIFO) c. Specific identification d. Average-cost method