The Escape Clause in U.S.trade Law

The escape clause in U.S.trade law:

A) enables the United States to withdraw from NAFTA.
B) permits the U.S.government to impose trade barriers if fairly traded imports are the cause of significant injury to a U.S.industry and its
Workers.
C) permits the government to impose trade remedies against nations that unfairly subsidize their exports to the United States.
D) enables immigrants to return to their home countries.