Sales during the year were 770 units. Beginning inventory was 580 units at a cost of $6 per unit. Purchase 1 was 290 units at $7 per init. Purchase 2 was 190 units at $8 per unit. Required: a. Assume the periodic inventory system is used. Calculate cost of goods sold and ending inventory using FIFO method. b. Assume the periodic inventory system is used. Calculate cost of goods sold and ending inventory using LIFO method. Complete this question by entering your answers in the tabs below. Assume the periodic inventory system is used. Calculate cost of goods sold and ending inventory using FIFO method. Note: Enter all values as a positive value