The inventory data for an item for November are: Nov. 1 Inventory...............................15 units at $20 4 Sold.......................................10 units 10 Purchased..............................25 units at $21 17 Sold.......................................15 units 30 Purchased..............................10 units at $22 Using the perpetual system, costing by the last-in, first-out method, what is the cost of the inventory of 25 units on November 30? Group of answer choices $500 $515 $510 $530