Empirical Studies of the Effect of Competition on Discrimination Have

Empirical studies of the effect of competition on discrimination have shown all of the following except:

A) increased international trade lowered the wage gap in less-competitive industries
B) bank deregulation narrowed the gap between men's and women's wages
C) among plants with high levels of market power,a greater proportion of women employees raises firm profits
D) among plants in highly competitive industries,a greater proportion of women employees raises firm profits