The United States Is the World's Leading Grain-Producing Nation

The United States is the world's leading grain-producing nation. Exporting grain causes the:

A) ​domestic consumption of grain to rise because of the added foreign demand.
B) ​price of grain in the domestic market to fall because foreigners are now taking some of the domestic demand.
C) ​price of grain to domestic consumers to rise because of the added foreign demand.
D) ​standard of living of foreigners to fall because of the lost purchasing power.