Which of the following is NOT correct? a. The changes in the firm's future cash flows that are a direct consequence of accepting a project are called incremental cash flows b. Opportunity costs are the amounts foregone by using an asset in a firm's possession for the project under consideration Oc Costs that have already been paid and cannot be recovered regardless of whether we accept the project or reject it are called sunk costs d. Financing cost for the project is the effect of project on other parts of the firm