Which of the Following Statements About the Age Discrimination in Employment

Which of the following statements about the Age Discrimination in Employment Act of 1967 ADEA) is true?

A) In 2009,the Supreme Court ruled that older workers suing under the ADEA no longer had to prove that their age was the major cause for termination.
B) ADEA applies to any employer with over twenty workers,including state governments.
C) The ADEA makes it illegal to discriminate against workers over the age of thirty.
D) Although it was passed around the same time as Title VII,for decades courts held that only disparate impact cases under the ADEA were viable.
E) Mandatory retirement age is illegal under the ADEA,except for high-level executives over the age of forty who are entitled to a pension.