9. You are planning a project to develop and deploy a new information system for managing payroll. The project scope consists of trained users, and technology consisting of a payroll database, payroll software, and interface software that will exchange data between the payroll system and an existing accounting system. The training will require 10 days to develop the training materials (this can start right away) and 20 days to conduct training sessions for all the users (the training sessions will be conducted before the technology is deployed). The technology requires you to build the new payroll database over 10 days, while at the same time you develop the new payroll software for 20 days, and develop the test scripts (after developing the payroll software) for 5 days. You will use the test scripts to test the payroll database and payroll software together for 10 days. It takes 10 days to develop the interface software, which can occur in parallel with the work on the payroll database and payroll software. Finally, you plan to spend 20 days to deploy the technology to the organization's end users. Assume you already have all the necessary people, equipment, materials, etc. on hand, so your project's scope is limited to what is described above. a. (3 points) Create a WBS for this project..Provide three levels of detail (Hint: The name of the project constitutes the top level). b. (3 points) Draw a network diagram using the precedence diagramming method (PDM). c. (3 points) What activities are on the critical path for this project? Show your work. d. (2 points) What is the minimum duration (in days) of the project? Show your work