The inventory data for an item for November are: 20 units at $20 Nov. 1 Inventory....... 4 Sold...... .10 units for $50 10 Purchased..... .30 units at $21 17 Sold. .20 units for $50 .10 units at $22 - 30 Purchased........ Using the perpetual system, costing by the last-in, first-out method, what is the gross profit on November 30? $1500 o $880 $890 $610 d