The following information ($ in millions) comes from a recent annual report of Ama Net sales Total assets End of year balance in cash Total stockholders' equity Gross profit (Sales - Cost of Sales) Net increase in cash for the year Operating expenses Net operating cash flow Other income (expense), net $10,715 4,521 1,210 474 2,498 25 2,061 654 (18) Compute the income before income tax for Amazon. Multiple Choice $339 -12 $539 $419 O $499