The correct answer is D.
The United States National Security Council is used by the President of the United States as a main forum for reference in the fields of social security, foreign policy and military matters. The Council advises the President on all these matters and helps him to coordinate them. It was created in 1947 by the National Security Act.
The Executive Office of the President was created in 1939 by Franklin D. Roosevelt. It is a group of agencies at the center of the executive branch of the government. It consists of agencies such as : the White House Office, National Security Council and the Office of Management and Budget. It provides the President with the support to govern effectively. The Office communicates the President's messages to the American people and promotes America's goals and trade interest abroad. It is home to the President's closest advisors.