The GDP of the United States in 2014 Was Around

The GDP of the United States in 2014 was around $17.4 trillion. This means

A) that the value of output produced in the U.S. in 2014 was around $17.4 trillion.
B) that total income in the U.S. in 2014 was more than $17.4 trillion.
C) that total spending in the U.S. in 2014 was more than $17.4 trillion.
D) that the value of output produced by U.S.-owned resources was less than $17.4 trillion.