A Small University Employs Two Economists

Multiple Choice

A small university employs two economists.Rob has been employed by the university for 15 years,and Nasrin has been employed for 1 year.Rob's salary is significantly higher than Nasrin's,although both have their doctoral degrees in economics.Each professor averages one publication per year,and both are excellent teachers.Given this information,the wage difference is BEST explained by:

A) compensating differentials.
B) differences in human capital.
C) discrimination.
D) differences in talent.