You are working on resource assignments and need to determine the types and criticality of the resources needed for the project, along with the skill sets of the existing project team members. If you don't have the skills on staff, you'll need to contract with an external vendor to procure the resources needed. You are examining resources that will need to be engaged for the entire project. What does this question describe? (Choose three.)

A. These are extended resources.

B. You are performing a gap analysis.

C. These are core resources.

D. The size of this team should be between 5 and 11 team members.

E. You can procure resources much faster by using a prequalified vendor.