By choosing to use the companys WACC in the calculation of the NPV of a project, we are assuming that the project: a. i) Has the same risk as the average- risk project of the company; ii) will have a constant target capital structure throughout its useful life. b. i) Has the same risk as the average- risk project of the company; ii) will not have a constant target capital structure throughout its useful life. c. i) Has a different risk as the average- risk project of the company; ii) will have a constant target capital structure throughout its useful life