Assume That Nell Is Correct That Third Parties Have a Duty

Multiple Choice

Assume that Nell is correct that third parties have a duty to enforce other's right not to be killed. Which of the following could you infer from that claim?

A) People may have duties to change their social and political institutions, including states and international organizations, to better enforce people's right not to be killed.
B) If person A kills person B in self-defense, then B's right not to be killed is violated although A's actions are morally permissible.
C) People have duties to enforce the laws within their own countries to prevent the deaths of their fellow citizens but do not have duties to prevent deaths in other countries.
D) The duty to enforce person A's right not to be killed will require that one kills others who are trying to kill