During 2017, Skysong, Inc. reported cash provided by operations of $651000, cash used in investing of $563000, and cash used in financing of $156000. In addition, cash spent for fixed assets during the period was $226000. Average current liabilities were $533000 and average total liabilities were $1407000. No dividends were paid. Based on this information, what was Skysong free cash flow?

a. $88000.

b. $425000.

c. $118000.

d. $-495000.