Why was the high school diploma requirement in Griggs found to be discriminatory? Choose all that apply. A. Because Duke Power prevented Black employees from getting a high school diploma B. Because the new policy "disparately impacted" Black employees at Duke Power C. Because most of the Black employees didn't have a high school diplomawhich prevented Black employees from being able to advance into other departments. D. Because the company could not demonstrate that having a high school diploma improved one's job performance