Which of the Following Accurately Describes How Peacekeeping Can Promote

Which of the following accurately describes how peacekeeping can promote a more peaceful world?

A) The presence of peacekeepers can reduce the possibility of a civil war resuming.
B) Peacekeepers have been able to stop genocides from occurring.
C) Peacekeepers can impose cease-fires between states at war.
D) Peacekeepers are neutral actors who can negotiate bargains between two states and often avoid a war.
E) Peacekeepers usually achieve their goal of reducing domestic criminal conduct.