Which person has the highest opportunity cost of obtaining a college degree (assuming that attending college requires giving up his or her current position)?
a. Bill, who is unemployed.
b. Jane, who is an unwed mother and earns $15,000 a year.
c. Larry, who is a technician in the Navy earning $18,000 a year with free food and housing.
d. Mary, who has a job earning $60,000 a year as a computer programmer.
e. Unable to determine from the data given.