Which of the Following Statements About the Fourth Republic Is

Which of the following statements about the Fourth Republic is NOT true?

A) Its first president, Olusegun Obasjano, undertook a number of steps towards democratization, such as retiring military officers who held power under military governments, while he simultaneously sought to use nondemocratic means to sustain his stay in power.
B) The military has not intervened in politics.
C) Its second president, Umaru Musa Yar'Adua, was largely ineffective due to failing health and political challenges.
D) It was formed after the military peacefully handed over power to an elected civilian government.
E) All transfers of power thus far have been without controversy.