Resource Planning is $\_\_\_\_\_\_\_\_$

A$.$ the process of getting the required human resources assigned and working on the project

B$.$ the process of determining what physical resources and what quantities of each should be used to perform project activities

C$.$ the determining the processes required to ensure that the project includes all the work required to complete the project successfully

D$.$ the process of identifying and documenting the specific activities that must be performed to produce the various project deliverables