Which of the following statements is incorrect regarding the research done on differentiating transformational from transactional aders?

Transactional leadership builds on transformational leadership and produces levels of follower effort and performance beyond what transformational leadership alone can do$.$

Transactional leaders guide their followers toward established goals by clarifying role and task requirements.

ransformational leaders change followers' awareness of issues by helping them look at old problems in new ways.

best leaders are transactional and transformational.