The inventory data for an item for September are 20 units at $20 10 units 30 units at $25 20 units 10 units at $30 Sep. I Inventory Sold 4 10 17 30 Sold Purchased Using the perpetual system, costing by the First-In, First-Out Method (FIFO), what is the Cost of the Merchandise Inventory of 30 units on September 30