All of the Following Are Possible Explanations for the Fact

Multiple Choice

All of the following are possible explanations for the fact that on average women earn lower wages than men in the United States except:

A) women choose to work in low-wage industries.
B) women are more productive than men on average.
C) women enter and leave the labor force more frequently than men, causing them on average to have less experience and a lower productivity than men.
D) women are discriminated against in labor markets.