6. Assume that Corp. A had inventory at the beginning of 20x6 of 500 units at a total cost of $8,000. During the year, Corp A purchased an additional 4,000 units on several dates at different per unit cost amounts, The total cost of the 4,000 units purchased was $74,000, Assume that Corp. A has determined that its 20x6 cost of goods sold was $8,400. What is the amount of Corp. A's, December 31, 20x6 ending inventory? A. $ 73,600 B. 82,000 C. 65,600 D. 90,400 E. None of the above