You are researching the question of whether a company that employs 50 individuals is an employer under the federal law regulating age discrimination in employment. Your case is pending in the federal district court in Toledo, Ohio. You learn that the definitions in the age discrimination statute were derived from those already in the sex discrimination statute. Rank the following authorities and list whether each is a primary binding, primary persuasive, or secondary authority.

a. the federal age discrimination in employment statute that defines the term employer

b. the federal sex discrimination in employment statute that defines the term employer

c. a U.S. Supreme Court case that interprets the definition of employer contained in the federal age discrimination in employment statute

d. a U.S. Supreme Court case that interprets the definition of employer contained in the federal sex discrimination in employment statute

e. a decision of the Northern District Court of Ohio, Western Division, concerning the definition of employer under the federal age discrimination in employment statute

f. a law review article in the University of Toledo Law Review concerning the definition of employer contained in the federal age discrimination in employment statute

g. a section of an employment law treatise that explains the definition of employer under the federal age discrimination in employment statute

h. an Ohio Supreme Court case that explains the definition of employer under the federal age discrimination in employment statute

i. Which authorities would you use in a legal memorandum you are writing for an attorney and why?