Linda is a first-time project manager and is analyzing a project schedule. She intends to apply resource leveling, and she has the following guidelines on Resource Leveling. Which of these four statements is incorrect?

Resource Leveling can often cause the critical path to change.

Resource Leveling is applied to a schedule before it has been analyzed by the critical path method.

Resource Leveling is applied to keep resource usage at a constant level.
Resource Leveling is necessary when resources have been overallocated.