To an Economist, the Cost of a College Education

To an economist, the cost of a college education

A) includes the income that the student could have earned during the time spent in college.
B) can be measured solely by the dollar cost of tuition, books, and other fees.
C) includes only the cost of schooling, not the cost of housing and food.
D) excludes financial aid in computation of the cost of schooling.
E) All of these responses are correct.