A Potential Problem Associated with the Use of UN Peacekeepers

A potential problem associated with the use of UN peacekeepers to quell disturbances within fragile or failed states is

A) various forms of abuse of non-combatants committed by the peacekeepers.
B) guaranteed professionalism on the part of the peacekeepers.
C) the ability to ensure the peacekeepers will come from states or groups that do not have historical grudges against the host state.
D) that the UN must hire peacekeepers only from states with low levels of military professionalism.