How Was the National Security Doctrine Supposed to Function

How was the national security doctrine supposed to function?

A) Ideally, the United States would handle communist invaders from outside the hemisphere and Latin American armies would deal with any domestic communist opposition.
B) The United States would take care of all communist threats by having a standing army in each Latin American country.
C) The United States would not get involved in the national affairs of any Latin American country.
D) Ideally, Latin American armies would handle communist invaders from outside the hemisphere and the United States would take care of communist threats in each particular country.