Analyzing Inventories with Quarterly Data and LIFO Liquidation The inventory footnote from The Dow Chemical Company's first quarter 2019 SEC report follows. The company also reports cost of goods sold for Q1 of 2019 of $10,600 million. Inventories, in millions Finished goods Work in process Raw materials Supplies Total Adjustment of inventories to a LIFO basis. Total inventories Mar. 31, 2019 Dec. 31, 2018 $5.703 $5,640 2.239 940 891 $9,773 (262) $9,508 millio 2.214 941 880 $9,675 (415) $9,260 Required a. What inventory costing method does Dow Chemical use? As of Q1 of 2019, what is the effect on cumulative pretax income and cash flow of using this inventory costing method, assuming a 30% average cumulative tax rate. Note: Do not use any negative signs with your answers. Effect on pr