6 A firm that sells a single product had a beginning inventory of 10,000 units with a total cost of BD26,000. Early in the year, 4,000 units were purchased at BD4 each. Using WA method, What is the value of the ending inventory of 3,000 units (using a periodic inventory system). * (1 Point) BD 15,000 BD 10,000 BD 9,000 BD 8,000