Mannisto Inc uses the FIFO inventory cost flow assumption. In a year of rising costs and prices, the firm reported net income of $264,351 and average assets of $1463,350. If Mannisto had used the LIFO cost flow assumption in the same year, its cost of goods sold would have been $33,570 more than under FIFO, and its average assets would have been $31,690 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 fi.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 $314,901 and $1,780,570, resped LIFO had been used through the years, Inventory values would $46,550 than under FIFO and current year cost of goods sold would have been $16,892 less than under FIFO Calculate the firm's ROI under each cost flow assumption (FIFO and LIFO) (Enter your answers os percentages rounded to 1 decimal place (l.e. 12.2%).) FIFO LIFO ROI