Which of the Following Diversity Issues Is True in the U.S.workforce

Which of the following diversity issues is true in the U.S.workforce?

A) Unemployment among the disabled has dropped sharply since the introduction of the Americans with Disabilities Act.
B) Literacy has ceased to be an issue among American workers.
C) The median age of the American worker is increasing.
D) White households continue to have higher median incomes than Asian ones.
E) Among the top 500 U.S.companies, most currently do not yet offer domestic partner benefits for same-sex couples.