You are the project manager for three projects. You are about to estimate costs for these three projects. Given the below information on each project, recommend an appropriate estimation method and justify your answer for each.
Project A: The work of this project has not likely been done before by anyone. You are breaking technological barriers in this project. As such, it is imperative you get accurate cost estimates.
Project B: This project will be a scale-up of a project done last year. All the same processes will be used. The costs for the material and other resources should be scalable based on last year's costs.
Project C: This project is new to your company. You do not feel confident in estimating the project costs using internal resources. There are other companies that have done this type of work. Yet you still want the most accurate estimates possible.