Below are summary cash flow statements for three roughly equal-sized companies. ($ millions) A B C Net cash flows from operating activities (308 ) (308 ) 316 Net cash used in investing activities (908 ) (38 ) (98 ) Net cash from financing activities 1,280 226 (248 ) Cash balance at beginning of year 158 158 158 a. Calculate each companys cash balance at the end of the year. (Enter your answers in millions.)