13. The inventory data for an item for May are: May 1 Inventory 20 units at $20 4 Sold 10 units 10 Purchased 13 units at $24 17 Sold 20 units 31 Purchased 10 units at $25 Using the perpetual system, costing by the last-in, first-out method (LIFO), what is the cost of the merchandise inventory of 13 units on May 31? a. $300 b. $250 c. **$310 d. $288 info needed found on page