(Unit 5) As a project manager, one of the cost management tools you use is earned value management. Your manager asks you to justify the time you spend on reporting project progress. Which of the following statements best explains why you are using the earned value management technique? O Future performance can be made to exactly meet the plan. Future performance can be forecasted based on past performance. O Future performance can be predicted to within 10 percent of the budget. Past performance can be measured to an accuracy of less than 5 percent