For Which of the Following Individuals Would the Opportunity Cost

For which of the following individuals would the opportunity cost of going to college be highest?

A) a promising young mathematician who will command a high salary once she earns her college degree
B) a student with average grades who has never held a job
C) a famous,highly-paid actor who wants to take time away from show business to finish college and earn a degree
D) a student who is the best player on his college basketball team,but who lacks the skills necessary to play professional basketball