1 2 3 4 5 6 7 8 9 The inventory costing method where the unit sold is identified with a specific purchase and the ending inventory is made up of the remaining units on hand is known as the a. first-in, first-out (FIFO) inventory cost flow method. O b. weighted average inventory cost flow method. O c. specific identification inventory cost flow method. d. last-in, first-out (LIFO) inventory cost flow method