Measured as a Share of GDP, the Borrowing of the Federal

Measured as a share of GDP, the borrowing of the federal government from foreigners

A) is zero; the federal government does not borrow from foreigners.
B) is 100 percent; the federal government borrows only from foreigners.
C) has been approximately 50 percent of GDP since the early 1990s.
D) was approximately 10 percent of GDP in 2000, but it soared to 35 percent of GDP in 2012.