Which One of the Following Is TRUE

Which one of the following is TRUE?

A) Over the past two decades, the share of U.S. public debt held by foreigners has declined.
B) The federal government typically borrows money by selling U.S. Treasury bonds.
C) The years in which the federal government runs a budget surplus are more frequent than the years in which it runs a budget deficit.
D) A budget surplus arises when government spending exceeds government revenues.