Conclusion:

Investing activities are generating cash, and selling of plant & equipment $($Capital Expenditures$)$ are the primary sources.

Investing activities are generating cash, but sales of plant & equipment $($Capital Expenditures$)$ are not the primary causes.

Investing activities are consuming cash, and purchases of plant & equipment $($Capital Expenditures$)$ are primary sources.

Investing activities are consuming cash, but purchases of plant & equip. $($Capital Expenditures$)$ are not primary sources.