What Was the Effect of the Great War Upon the American

What was the effect of the Great War upon the American economy from 1914 to 1916?

A) Because of Wilson's embargo, there was almost no effect.
B) Trade with the Central Powers almost quadrupled to $3.2 billion a year, while that with the Allies fell to a trickle.
C) Because of Wilson's embargo, the economy suffered a severe recession.
D) Trade with the Allies almost quadrupled to $3.2 billion a year, while that with the Central Powers almost disappeared.