A firm has two production runs a year to create inventory for sale. In the first run, 150,000 units are made at a unit cost of $4. In the second run, 150,000 units are made at a unit cost of $4.25. Over the course of the year, the firm sells 225,000 units. Under FIFO the ending inventory is: A. $300,000 B. $318,750 C. $918,750 D. $637,500