In 2020, Len Corp. reports net cash flow from financing activities to be S720 million and net cash flow from investing activities to be -S600 million (cash outflow). Its cash balance was $52 million at the end of 2019 and $202 million at the end of 2020. What's Len Corp's net cash flow from operating activities? O $30 million O $120 million O $150 million $40 million