Transactional leaders:

A) improve efficiency.
B) build a strategic vision to change the organization.
C) represent an unrealistic stereotype that followers have of great leaders.
D) possess all of the competencies of great leaders.
E) none of the above.

Transactional leaders focus on maintaining the status quo and improving efficiency through rewards and punishments based on performance. They do not necessarily possess all the competencies of great leaders or build a strategic vision to change the organization. Option C is incorrect as a stereotype cannot be considered a characteristic of a leader.