Serene Stereos has the following inventory data: Nov. 1 Inventory 30 units @ $4.00 each 8 Purchase 120 units @ $4.30 each 17 Purchase 60 units @ $4.20 each 25 Purchase 90 units @ $4.40 each A physical count of merchandise inventory on November 30 reveals that there are 100 units on hand. Cost of goods sold under FIFO is 1) $863 2) $846 3) $438 4) $421