Which of the Following Is True Concerning Unilateral Transfers in the U.S.balance

Which of the following is true concerning unilateral transfers in the U.S.balance of payments?

A) Unilateral transfers have been positive since World War II.
B) Unilateral transfers have been negative since World War II.
C) Unilateral transfers have been negative every year since World War II except during the war in Iraq.
D) The United States places tight restrictions on its currency being sent out of the country.
E) Developing countries ordinarily place no restrictions on its currency being sent out of their countries.