20.) A firm is planning to undertake a new project. The additional cash inflows of the existing projects that will take place as a result of undertaking the new project are called opportunity costs. erosion. sunk costs. a. b. C. d. e. net working capital. synergy. 21.) Expenses that are related to a project, and that have already occurred and can not be recouped if the project is not undertaken, are known as: a. internal cash flows. b. incremental cash flows. C. irrelevant cash flows. d. external cash flows. e. erosion.