Which of the Following Statements About the Status of Disability

Which of the following statements about the status of disability internationally is most accurate?

A) The incomes and status of people with disabilities has steadily increased since the 1980s.
B) The UN 2006 Disability Rights Convention has produced demonstrable changes in the status of disabled persons in developing countries.
C) Disability rights laws ' impacts are gradual in changing in d/Disabled persons' status.
D) The United States continues to be a major leader in setting d/Disability policy.