Requirement 1. compute cost of goods sold and ending inventory, using each of the following four inventory methods: begin by entering the number of units sold and number of units in ending inventory. then calculate cost of goods sold and ending inventory using (a) specific identification, then (b) average cost, then (c) fifo, and finally (d) lifo. (round the average cost per unit to the nearest cent. round all final answers to the nearest whole dollar.) number of units cost of goods sold ending inventory