Why Are States Inconsistent in Their Enforcement of Human Rights

Why are states inconsistent in their enforcement of human rights law?

A) There is significant support for human rights norms but few incentives to punish those who violate human rights.
B) There is significant support for human rights norms but no way to punish those who violate human rights.
C) There is significant support for human rights norms,but current international human rights law is unrealistic about what rights should be enforced.
D) Only weak states truly support human rights norms,and they are too weak to enforce human rights law in stronger states.
E) States sign human rights treaties,but there is little real acceptance of international human rights norms.