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During 2021, SDSU Corporation had EBIT of $100,000, a change in net fixed assets of $400,000, an increase in net current assets of $100,000, an increase in spontaneous current liabilities (i.e.; account payable + accruals) of $400,000, a depreciation expense of $50,000, and a tax rate of 21%. Based on this information, SDSU's free cash flow is $21,000 $650,000. $50,000 $630,000. None of the given answers is correct