According to an Extensive Study of Union Wage Differentials

Multiple Choice

According to an extensive study of union wage differentials:

A) the private sector wage premium is higher today than it was in the 1970s.
B) public sector wage effects are smaller than those in the private sector.
C) nonunion workers are able to resist employers' efforts to reduce wages better than unionized workers.
D) there remains big variation in the premium across workers.