What Was the Role of Economic Factors in Supporting U

What was the role of economic factors in supporting U.S. neutrality in the early years of World War I?

A) The United States was greatly weakened financially by WWI and saw entering the war as an economic necessity.
B) The United States grew rich from its neutrality during WWI and saw joining the war as a way of getting even richer.
C) U-boat attacks had increased commerce for the United States by eliminating the competition, so continued neutrality benefited the nation's economy.
D) U-boat attacks prevented the United States from trading freely with Europe and required U.S. involvement.
E) U-boat attacks cost the German government millions of dollars, making them even more eager to draw the United States into the war.