What Happens to U

What happens to U.S. GDP when foreign countries experience prosperity?

A) It increases because the United States will export more product to those countries.
B) It decreases because the foreign countries will now buy more of their own products.
C) It decreases because the foreign countries will be able to export more at a lower cost.
D) It does not change because U.S. GDP is not affected by other countries' prosperity.