Whispering winds corp. markets cds of numerous performing artists. at the beginning of march, whispering winds had in beginning inventory 2,800 cds with a unit cost of $8. during march, whispering winds made the following purchases of cds. march 5 2,000 @ $9 march 13 4,000 @ $10 march 21 5,200 @ $11 march 26 2,000 @ $12 during march 11,900 units were sold. whispering winds uses a periodic inventory system. x your answer is incorrect. determine the cost of goods available for sale. the cost of goods available for sale $ calculate average cost. (round answer to 3 decimal places, e. g. 5.125.) average cost $ etextbook and media list of accounts * your answer is incorrect. determine (1) the ending inventory and (2) the cost of goods sold under each of the assumed cost flow methods (fifo, lifo, and average-cost). (round answers to o decimal places, e. g. 125.) fifo lifo average-cost the ending inventory the cost of goods sold $ $ etextbook and media list of accounts