What Were the Two Major Obstacles African Americans Faced in Securing

What were the two major obstacles African Americans faced in securing their rights?

A) The structure of government made it hard to change policy and politicians would not engage in costly behavior without an expected return.
B) The constitutional guarantee of slavery and the unwillingness of politicians to take tough action.
C) The unwillingness of the British government to use its emancipation powers in the states and the constitutional guarantee of slavery.
D) The inability to raise the taxes necessary to compensate slave-owners and the fact that politicians would not engage in costly behavior without an expected return.