The Pine Corporation had taxable operating income of $450,000 (i.e. earnings from operating revenues minus all operating costs). Pine also had 1) interest charges of $50,000, 2) dividends received of $10,000, 3) dividends paid of $25,000, and 4) income taxes. What is the firm's taxable income? O $378,000 $353,000 $497.500 $403,000