What Was the "Domino Theory

Multiple Choice

What was the "domino theory"?

A) The loss of one country to communism would lead to the loss of another and then another.
B) A communist victory anywhere would be met by a massive American response.
C) US forces were committed to meeting communist aggression at whatever level was necessary to prevent that aggression from succeeding.
D) Successful communist expansion would endanger US credibility.