Mannisto Inc. uses the FIFO inventory cost flow assumption. In a year of rising costs and prices, the firm reported net income of $217,775 and average assets of $1,463,010. If Mannisto had used the LIFO cost flow assumption in the same year, its cost of goods sold would have been $39,290 more than under FIFO, and its average assets would have been $42,760 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 ROI b. Suppose that two years later costs and prices were falling. Under FIFO, net income and average assets were $253,695 and $1,787,450, respectively, I LIFO had been used through the years, inventory values would have been $43,520 less than under FIFO, and current year cost of goods sold would have been $24,710 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%).) FIFO LIFO ROI