XYZ Company had the following purchases and sales information during the month of September: September 4 September 23 September 27 15 units were purchased at $15 per unit. 30 units were purchased at $20 per unit. 10 units were sold. XYZ Company sold 6 units from September 4, and 4 units from September 23. Using the specific identification inventory costing method, what is the cost of the ending inventory? A. $300 B. $655 C. $225 D. $600