Which of the Following Statements Regarding the Foreign Intelligence Surveillance

Which of the following statements regarding the Foreign Intelligence Surveillance Act (FISA) is true?

A) To spy on people located in the United States who are communicating abroad, the government needs a warrant.
B) Governments may keep irrelevant and personally identifying data before providing it to other agencies.
C) Under the FISA, the government does not need to notify defendants if the evidence being used against them in court was gathered in FISA surveillance.
D) To spy on people located in the United States who are communicating abroad, the government must obtain permission from a secret Foreign Intelligence Surveillance Court.