The option is C.3 that best represents what is included in the calculation of the United Stated gross domestic product (GDP).
All output produced within the U.S. is counted and output produced by U.S. companies outside the U.S. is Not counted.
The calculation of GDP considers all its income, it is the total products of a nation which considers consuming; business investments; government spending and exports minus exports.
In the income counts all that is earned inside the borders of the nation, so it is mandatory that it is produced inside the borders does not matter if it is by U.S. or other countries but must be within, but what is produced outside the U.S. borders is not counted.