Which of the following statements regarding project staffing is NOT true?

Exact start and end dates for team members are often negotiated to best meet the needs of individuals and the project.

Typically a core project management team is dedicated to the project from start$-$up to closeout.

A staffing plan reflects long$-$term goals of skilled team members.

Generally, longer projects experience less team turnover than shorter projects.

Team members needed during the execution phase are often not needed during the conceptual or closeout phases.