The Role of the Judicial Branch in the Separation of Powers

The role of the judicial branch in the separation of powers has depended on

A) the number of officers in the Supreme Court's police force.
B) the power of the courts to exercise judicial review.
C) whether the Supreme Court justices can form six-vote majorities to override presidential vetoes.
D) presidents' noninterference with the appointment of U.S.attorneys.
E) the size of the Supreme Court relative to the U.S.Congress.