Which of the following was not created as a result of the national security act

Its "federal bureau of investigation" I just took the test

the answer to the above question is the federal bureau of investigation provided the options are as follows;

The department of defense

B. The Central Intelligence Agency

C. The national security council

D. The federal bureau of investigation

the usa military was reorganised by the Truman administration shortly after the ww2, in 1947 creating the CIA, department of defense and national security council.