M7-21. Computing Cost of Goods Sold and Ending Inventory Bartov Corporation reports the following beginning inventory and purchases for 2020: Beginning inventory, 2020 .... 400 units @ $10 each Inventory purchased in 2020 ............ 700 units @ $12 each Cost of goods available for sale in 2020........... 1,100 units $ 4,000 8,400 $12,400 Bartov sells 600 of these units in 2020. Compute its cost of goods sold for 2020 and the ending in- ventory reported on its 2020 balance sheet under each of the following inventory costing methods: a. FIFO b. LIFO c. Average cost