Which of the Following Demonstrates the Contagion Hypothesis of Civil

Which of the following demonstrates the contagion hypothesis of civil war?

A) A civil war in a country may inspire rebels in a neighboring country.
B) Civil war is a random event,and clustering is likely to occur over large enough samples.
C) Good institutions in one country deter the rise of civil war in neighboring countries,even if they have bad institutions.
D) A rebel group may use a neighboring state as a base of operations.
E) Radio and television waves often cross national boundaries,spreading the possibility of conflict.