(L05) During 2017, Williamson Company changed from FIFO to weighted-average inventory pricing. Pretax income in 2016 and 2015 (Williamson’s first year of operations) under FIFO was $160,000 and $180,000, respectively. Pretax income using weighted-average pricing in the prior years would have been $145,000 in 2016 and $170,000 in 2015. In 2017, Williamson reported pretax income (using weighted-average pricing) of $180,000. Show comparative income statements for Williamson, beginning with “Income before income tax,” as presented on the 2017 income statement. (The tax rate in all years is 30%.)