II The following are summary cash flow statements for three equal-size companies. (15) B -320 -320 320 -900 -30 -90 Operating Cash Flow Investment Cash Flow Financing Cash Flow Beginning Cash balance 1200 210 -240 150 150 150 a. Calculate each company's cash balance at the end of the year. b. Looking at company A and B,which company would you prefer to own Why? c. Explain what might cause company C's net cash from financing activities to be negative