Roni Harris Is a College Student in the Business Department

Roni Harris is a college student in the business department of her local university. She came in to college thinking she wanted to become an Accounting major, but discovered that she is interested in product marketing and in sales.
-Despite her interest in sales,Roni is concerned when she learns that,on average,female salespeople make less money than male salespeople do.Which one of the following statements is most likely true?

A) Male salespeople have controlled the industry for almost a century, so there is no reason to think female salespeople will ever be able to equal male earnings.
B) Male salespeople would like to earn salaries equal to the salaries of female salespeople, but industry regulations have set their starting salaries at unequal rates.
C) Female salespeople will never earn as much as male salespeople will in certain industries, such as heavy industry and transportation.
D) Female salespeople make less money than male salespeople do because they must take care of their families and therefore cannot be as focused on their jobs as men are.
E) The difference between the average earnings of female and male salespeople is less than the difference between the average earnings of female and male workers in other professions.