An executive order issued by President Lyndon Johnson requires certain employers to engage in affirmative action in order to improve job opportunities to underrepresented groups, particularly women and racial minorities. What kind of employers are subject to this affirmative action policy?

A. Employers with more than 100 employees
B. Employers with net assets in excess of $5 million.
C. Employers whose shares of stock are publicly traded.
D. Employers who enter into contracts with the federal government.
E. Employers engaged in interstate commerce.

Answer: D. Employers who enter into contracts with the federal government.