Which of the Following Would Be a Movement Toward the Pareto

Which of the following would be a movement toward the Pareto frontier with regard to the benefits of trade?

A) Steel workers losing their jobs because of steel imports get free training,paid for by the government,so they can get jobs in another industry.
B) Agricultural workers facing wage decreases because of imported food successfully lobby the government to institute tariffs.
C) Workers in a clothing factory in Mexico being laid off go to the United States to find work.
D) South Korean semiconductor manufacturers sell their products at a lower-than-market price in Japan.
E) The wages of Bangladeshi shoe makers rise when the United States imposes tariffs on shoe imports.