True or False (If False please explain why) Thanks!

1. Sale of a piece of equipment at a gain reduces the CF from salvage.
2. The installation cost is added to the accumulated depreciation of an asset to get the initial capital investment.
3. Coca-Cola needed to purchase additional inventory of plastic bottles to launch its Pulsar Cola. This decrease in inventory represents a positive cash flow associated with the project.
4. Opportunity costs add to aproject's cash flows while erosion costs and synergy gains reduce those cash flows.