Below are summary cash flow statements for three roughly equal-sized companies. ($ millions ) Net cash flows from operating activities A B C Net cash used in investing activities (310) (310) 320 Net cash from financing activities (910) (40) (100) Cash balance at beginning of year 1, 300 230 (250) 160 160 160 a. Calculate each company's cash balance at the end of the year. (Enter your answers in millions.) Company A B (million) C (million) (million) End-of-year cash balance