Bonita Bookstore had 480 units on hand at January 1, costing $9 each. Purchases and sales during the month of January were as follows: Date Purchases Sales Jan. 14 355 @ $13 17 280 @ $12 25 230 @ $12 29 220 @ $18 Bonita does not maintain perpetual inventory records. According to a physical count, 415 units were on hand at January 31. The cost of the inventory at January 31, under the FIFO method is: O $3735. O $4980. O $5052. O $4500