The Equilibrium Wage Paid to College Professors Is Generally Thrice

Multiple Choice

The equilibrium wage paid to college professors is generally thrice that of kindergarten teachers.The correct explanation for this difference in wages is:

A) the excess demand for kindergarten teachers as compared to college professors.
B) the higher funds available to universities as compared to schools.
C) the high investment required to become a college professor.
D) the lower value placed by society on kindergarten teachers.