Restating Inventory from LIFO to FIFO BigBook.Com uses LIFO inventory accounting. Notes to Big Book. Com's Year 9 financial statements disclose the following (it has a marginal tax rate of 35%): Determine the amount by which Year 9 retained earnings of BigBook.Com changes if FIFO is used. Determine the amount by which Year 9 net income of BigBook.Com changes if FIFO is used for both Years 8 and 9. Discuss the usefulness of LIFO to FIFO restatements in an analysis of BigBook.Com