Why Might Signing Human Rights Treaties Be Associated with Worse

Why might signing human rights treaties be associated with worse human rights practice?

A) Human rights law does not cause states to stop abusing their citizens.
B) States cannot enforce human rights law,because of the self-help nature of international politics.
C) States sign human rights treaties to mask the fact that they actually commit human rights abuses.
D) The conflict over human rights treaties makes states commit more human rights abuses.
E) Human rights law actually violates the human right of sovereignty.