18. Stone Company changed its method of pricing inventories from FIFO to LIFO. What type of accounting change does this represent? A) A change in accounting estimate for which the financial statements for prior periods included for comparative purposes should be presented as previously reported. B) A change in accounting principle for which the financial statements for prior periods included for comparative purposes should be presented as previously reported. A change in accounting estimate for which the financial statements for prior periods included for comparative purposes should be restated. D) A change in accounting principle for which the financial statements for prior periods included for comparative purposes should be restated. C)