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 O None of the given answers is correct. O -$630,000. O-$50,000. $650,000. O-$21,000.