Required: a. Assume that Kuffel Company uses a periodic inventory system. Calculate cost of goods sold and ending inventory under FIFO and LIFO. b. Assume that Kuffel Company uses a perpetual inventory system. Calculate cost of goods sold and ending inventory under FIFO and LIFO. c. LIFO results are different for parts a and b as timing of the application of LIFO rules is relevant. Complete this question by entering your answers in the tabs below. a. Assume that Kuffel Company uses a periodic inventory system. Calculate cost of goods sold and ending inventory under FIFO and LIFO. b. Assume that Kuffel Company uses a perpetual inventory system. Calculate cost of goods sold and ending inventory under FIFO and LIFO