While planning a project in Microsoft Office Project Standard 2007, you set up your schedule, allocate resources, and level your project. Midway through the first of four phases, a policy decision affecting Phase 4 changes the scope of the project. You reschedule Phase 4 accordingly by adding new tasks to the project plan and changing existing tasks. You now need to level the project plan without affecting the previously leveled tasks. What should you do?

A.
Level the entire project plan.

B.
Set all tasks in Phases 1 through 3 to priority 1000, and then level the entire project plan.

C.
Activate the option to clear leveling values before leveling, and then level the entire project plan.

D.
Activate the option to level by creating splits in remaining work, and then level the entire project plan.