Which one of these took place because of Greece and Turkey's attempts to resist the spread of Communism?

ASoviet and American troops fought in the Mediterranean.

Eliminate

BPoland, Czechoslovakia, and Romania joined them to resist Soviet influence.

CHarry Truman announced the "Truman Doctrine" plan to aid any country in such a situation.

DHarry Truman approved a covert operation to assassinate communist leaders in the two nations.