Which of the Following Would Tend to Increase the Natural

Which of the following would tend to increase the natural rate of unemployment?

A) The creation of national unemployment offices to make information about job openings more accessible.
B) Recessionary downturns in the economy that result in massive layoffs of autoworkers.
C) Sociological changes that encourage people to seek employment.
D) The creation of government subsidies for workers who relocate to areas where new jobs can be found.
E) Less government money made available as unemployment compensation.