The following table is a cash flow statement in $million. Note that CF means cash flow. Year 2021 Year 2022 CF from operating activities 350 500 CF from investing activities (1) -380 CF from financing activities 150 (2) Net changes in cash position -30 40 Cash position at beginning of year 100 70 Cash position at end of year 70 (3) How much is the amount of column (1) ? How much is the amount of column (2) ? How much is the amount of column (3)