One Important Unintended Consequence of the Smoot-Hawley Tariff Act Was

One important unintended consequence of the Smoot-Hawley Tariff Act was to:

A) lessen the severity of the Great Depression by increasing exports.
B) provide the federal government with an effective tool for exercising monetary policy.
C) increase the efficiency of domestic automobile production.
D) increase the severity of the Great Depression by causing other countries to retaliate,and thus leading to a decline in exports.
E) increase the U.S.government budget deficit by $15 million.