Bonita's Staff has the following inventory information. Beginning 20 units at July 1 Inventory $90 120 units at Purchases $90 14 Sale 77 units 21 Purchases 63 units at $99 30 30 Sale 59 units Assuming that a perpetual inventory system is used, what is the ending inventory on a FIFO basis? $6377 $6066 $6597 $6875