Mannisto Inc. uses the FIFO inventory cost flow assumption. In a year of rising costs and prices, the firm reported net income o $212.357 and average assets of $1,554,120. If Mannisto had used the LIFO cost flow assumption in the same year, its cost of goods sold would have been $47,840 more than under FIFO, and its average assets would have been $41,360 less than under FIFO. Required: a. Calculate the firm's ROI under each cost flow assumption (FIFO and LIFO). (Enter your answers as percentages rounded to 1 decimal place (i.e., 12.2 % ).) FIFO LIFO 13.7 % 17.2 % ROI b. Suppose that two years later costs and prices were falling. Under FIFO, net income and average assets were $254,017 and $1,832,530, respectively. If LIFO had been used through the years, inventory values would have been $43 440 less than under FIFO and current year cost of goods sold would have been $20.095 less than under FIFO. Calculate the firm's ROI under each cost flow assumption (FIFO and LIFO). (Enter your answers as percentages rounded to 1 decimal place (i.e., 12.2 %)) LIFO FIFO % 13.9 ROI