Can someone brake the steps down for me? i believe its answer choice A

Marigold Bookstore had 470 units on hand at January 1, costing $ each. Purchases and sales during the month of January were as follows: Date Purchases Sales 405 @ $13 Jan. 14 17 210 @$10 210 @ $9 25 29 230 @ $15 Marigold does not maintain perpetual inventory records. According to a physical count, 255 units were on hand at January 31. The cost of the inventory at January 31, under the LIFO method is: $2040 $2550 $2295 $2340