The Income Gap Between Older Men and Women May Diminish

The income gap between older men and women may diminish in the future, but it will probably still exist. Which of the following is NOT an accepted condition that explains lower retirement incomes for women in the future?

A) Women make less use of Individual Retirement Accounts (IRAs) , meaning they often lose control over this part of their retirement income.
B) Women work in society's lowest paying jobs, therefore they contribute and receive less money from Social Security.
C) Women often have shorter work careers because they care for a family. This reduces the number of years of contribution toward Social Security.
D) Women tend to work in part-time jobs and in small businesses. These jobs rarely provide pension plans.