Below are summary cash flow statements for three roughly equal-sized companies. Net cash flows from operating activities Net cash used in investing activities Net cash from financing activities Cash balance at beginning of year ($ millions) A B (306) (306) 312 (906) (36) (96) 1,260 222 (246) 156 156 156 a. Calculate each company's cash balance at the end of the year. (Enter your answers in millions.) Company A (million) B (million) (million) End-of-year cash balance