In Measuring Gross Domestic Product, Goods Produced by Foreign Firms

In measuring Gross Domestic Product, goods produced by foreign firms in the United States are

A) counted, and so are goods produced by American firms in foreign countries.
B) counted, but goods produced by American firms in foreign countries are not counted.
C) not counted, but goods produced by American firms in foreign countries.
D) not counted, and goods produced by American firms in foreign countries are also not counted.