Complex projects such as research and development for new products often employ rolling wave planning to estimate costs. Which of the follow

Project managers render an order of magnitude estimate for the first stage and a definitive estimate for the remainder of the project.

Project managers render definitive estimates for all stages of the project during initiation.

Project managers render a definitive estimate for the first stage and an order of magnitude estimate for the remainder of the project.

Project managers render an order of magnitude estimate for all stages of the project.