Which of These Statements Is not True About Kennedy's "Nation-Building

Which of these statements is not true about Kennedy's "nation-building" plans?

A) Kennedy believed wholeheartedly in the doctrine of containment.
B) The Alliance of Progress provided $25 billion dollars to Latin American countries to strengthen their resistance against communism.
C) The Soviet Union responded to Kennedy's promotion of wealth for US allies by building the Berlin Wall in 1961.
D) Kennedy announced he was willing to wage preemptive strikes to prevent the march of communism.
E) Kennedy's two biggest concerns early in his presidency were Cuba and Korea.