The opportunity cost of a college degree includes the A. goods that a student cannot purchase because of spending on books and tuition and the foregone income that could have been earned while in college. B. the cost of​ college, the foregone income while in​ college, and the inability to go to another college. C. the costs of​ food, housing,​ books, tuition that a student could have purchased. D. goods that a student cannot purchase because of spending on​ books, tuition,​ food, and housing and the foregone income that could have been earned while in college.