At XYZ Corporation all the receptionists or other persons dealing with the public should be white, female, under $30,$ and preferably blond. Male and$/$or non$-$white persons are hired only in positions that do not deal with the public.

This would not be employment discrimination, because XYZ Corporation is only doing this to please its customers.

This would not be employment discrimination, because white, under $30,$ blond females are very good receptionists.

This would be employment discrimination.

This would not be employment discrimination, because XYZ Corporation hires both male and female workers as well as both white and nonwhite.